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Magic eye tube circuit 6E2 tube magic eye driver board adopts Douk Audio core power technology, more convenient and simple to use, effectively reduces the power consumption of the circuit magic eye tube vacuum tube which gives a visual indication of the amplitude of an electronic signal Magic eye tube circuit. You should have about -10V and Breif explanation on making your own Magic Eye VU indicator. A glowing value/tube indicated CPU load. This is 6Z-E1. ) pushing the top of the tube along the tubes long axis, and slide it Another highlight is the true stereo design of the circuit. This tube has several peculiarities: it is probably the only indicator of agreement Here are a couple of uncommon devices utilizing the magic eye tube. EM81 ‘Magic Eye’ tuning indicator tube – Photograph taken by Luigi Amaglio 2014. 3V Magic Eye with 12. and as such will not work with many tuning eye circuits unless an external triode is added. Circuit: DIY Tube-Based CPU Meter. The RCA tube 6E5 is the first Magic Eye, designed by Allen Balcom Du Mont (born Jan. I made a VU Meter with it to show the signal strength of my Vacuum tube amplifier. Magic eyes have a ray-control electrode which dynamically deflects a beam of electrons traveling from the cathode to a fluorescent target. Except the deflection rod, connected to first anode, bends the electrons to cover less or more of the glow anode. Gallery Archive Articles. This is new EZ-6E5, new Magic Eye is very expensive in Japan now ! This is EZ-6E5. In this Instructable, you'll learn how to A magic eye tube is a miniature cathode ray tube, usually with a built-in triode signal amplifier. It's wired in like a "VU Meter" so the bars dance around as the music plays - way cool! but both the ad and the circuit diagram show it as a 6e2. Tube magic eye wavemeter schematic I'm trying to work out how to increase the visual dynamic range of the magic eye tube on this 6H30 preamp I recently purchased off ebay from HK. Simple electronic circuit to start Buy Magic Eye Tube 6E2 EM84 VU Meter Audio Level Indicator level circuit board Adjustable sensitivity FOR Amp Signal Amplifier at Aliexpress for . Theme - Light; YYYY-MM-DD / 12-hour clock; Contact Diycrap: magic eye tube 6e5cThe magic-eye tuning indicator Magic eye circuits for 6e56e5s magic eye tube röhre 6e5c. If desired the tube may be Magic Eye Tube - History. Display color is green You may check out another video related to Electronic Eye 1. So I plopped together a quick video to see the dramatic and cool visual effect. Eye Project. Forrest Cook 2008-2024 Introduction Here is a collection of information on a variety of fluorescent magic eye vacuum tubes, which are also known as indicator tubes. Howdy friends, I've worked with quite a number of tube circuits over the years, but I've never much delved into the operation of the so-called 'magic eye' tubes. Nothing is smashed here, everything breathes and shines while the MagicDeathEye will The 1629 magic eye tuning indicator is from RCA who designed the first such tuning indicator in the 1930s. as there was already a number of equivalent magic eye tubes on the British market, like the Y63, W1527, NR69, The diagram above shows the test circuit used to simulate the conditions of the Roberts-Majestic radios using I have a yaqin 5881 tube amp (schematics attached). The eye tube gives a visual indication of when the receiver is properly tuned to the signal being received. I'd like to get the 6X5 out of the circuit so I don't have to worry about it potentially damaging the transformer. This should light up the tube. Volume unit indicator circuit to detect volumes and alter the magic eye Some sets use an electron-ray (tuning/magic eye) tube to aid in tuning the set exactly to the station. The grid is the magic eye's input and it needs a negative voltage. The magic eye tube is mounted horizontally and is visible through a hole circuit 1 meg resistor between pins 2 and 4. . Check Details. Octoglow vfd Tube magic eye pocketmagic em84 em11 tunning em circuit values components schematics Magic eye tube 6e5c. A Free & Open Forum For Electronics Enthusiasts & Professionals (resistors or resistor-zener) would do, since there is no actual reference voltage in the circuit. 2. Radio tubes are valves. This was accomplished by a circuit that uses a neon tube similar to the Tune-A-Lite, but with four electrodes. If you have a tube checker, you can use it to light your eye tube as well - the lashup I described above is Tube 6X6 or Röhre 6X6 ID6403, Mag. and I'm willing to share the circuit. The creative "USB Magic Eye" circuit was presented back in 2010 as a handy CPU meter with a retro look and feel. com: 1Set Dual Way Magic Eye 6E2 Tube Audio Level Indicator Module VU Meter Music Spectrum Vacuum Tube Level Indicator Driver Board DIY Kits : Industrial & Scientific. There are many kind of Magic Eyes. The 1629 tube has a 12-volt filament so the adapter needs to have a "voltage doubler" circuit built into it. Not always that but the high voltages involved, make this a project unsuitable for the inexperienced. The tube you're looking for is not a Magic Eye in the sense it looks like an exclamation mark when you I modified the circuit shown on the site above to suit my needs and so that I could use components that I had lying around. 18,90 $ Rated 5. This truncated envelope size is possible due to the fact that the 6AF6 lacks an internal triode, and as such will not work with many tuning eye circuits unless an external triode is added. Does anybody know how to mod the magic eye tube / circuit so the peak level indicator displays at lower volumes? I have tried shorting the 10k resistor from the 8ohm output tap. This circuit is under:, circuits, The Magic Eye Wink l53081 A tube commonly used as a tuning indicator in old radios. The 6E5 tube is connected into the diode detector circuit of the receiver by means of a 6 wire cable. Through the use of controlled electron beams, this type of tube can illuminate a variety of circular and rectangular patterns on a phosphor-coated display element. Skip to; lifelike like a cat's eye. Magické oko EM11 v přijímači Tesla 623A Máj. Nixie Tube. See the attached image. Seco manufactured test equipment that utilized the magic eye tube and are best known for their tube testers. 12 . This can be either pin 1 or 6. See YouTube for a film of Shadowgraph in action. Connect a 100 ohm resistor, for protection, to one of the 80 tube plates. The difference in cost at the retail level of this If you’re interested in how the Magic Eye tube works you should check out the article at AntiqueRadio. Then remove the plate from the unit. Tesla Coil. How do these old Green 6E2 Tuning Valves act as a HiFi VU meter. Use as visual indicator to know when AVC voltage is highest or tuned on the station signal. Magic eye tube EM1. Thanks to different coloured stereo tube boards even two Magic Eye tubes can perform a stereo display You may check out another video related to Electronic Eye 1. So just a few ideas you could use a nixie tube supply. 15, 1965 New York NY). The other employs an electron-ray tube which presents a visible fluorescent display Although the magic eye circuit is simple, this project requires connecting to a high-voltage current source within the chassis of an antique tube radio. A parallel filament circuit is also required since the filament Tube magic eye with em81-input sensitivity?! Hello People! the problem with this sort of thing is the 250V Dc for people not using tube circuits. The earliest document I have found using the term Magic i have. They did make other test equipment which also used the magic eye such as this flyback circuit and inductance analyzer used for television servicing (left). At 5:35 the circuit is discuss The resulting distortion characteristics can be viewed at: 1629 Magic Eye as amp. This makes the magic eye tube a perfect choice to display a one dimensional V-U characteristic of a given wave in real time. They were de The 6E1P / 6BR5 / EM80 "Magic Eye" and Other Indicator Tubes. Circuit Design. )snap it up and away from the clamp ends one at a time, or 2. middle with diffuser, right real 6U5 tube SS6E5_YouTube. The classic “Magic Eye” tuning indicator was a fantastic piece of vacuum tube technology that graced all kinds of electronic gear for a fair fraction of the 20th century. The operating characteristics are the same as for type 6E5. This circuit increases the B+ to pin 4 of the tube using a resistor , diode and capacitor. EM80 Circuits. It thereby outputs a kind of The magic eye tube (or valve) for tuning radio receivers was invented in 1932 by Allen B. 6021W tube The tube, whose technical name was electron-ray indicator, was more commonly known as a tuning indicator, and the first commercial iteration was the RCA 6E5, which debuted in 1935, under the trademarked name of ‘magic eye’ by which this type of tube is most recognized today. A 40 MHz oscillator produces a The RCA-Rider Chanalyst (left) was one of the first pieces of test equipment to use the magic eye tube, or, tubes, as there were four of them. Examples of amp circuits are all over the internet and there are some really helpful and easy Instructables that guide you through the process of building an amp circuit and explain how they work along the way. I also have three 1960s Transitron SE5U4GB solid state rectifiers in my tube stash. richy 6E2 マジックアイ VUメーター 自作 DIY 6E2 Magic Eye Tube VU Meter I've designed a project to show off the Russian 6E1P magic eye tubes. If it feels too loose, just wrap some electricians tape around the bottom part of Electronic Circuit Design. a video on my youtube for EM71 Magic eye IN STEREO or the em84 tube look for thecobraman EM71 Magic eye IN STEREO just Let me know if you need more info mark . 14 Schematic of Magic Eye Tube Circuit. His first patent was: Aug. , EM4) and the glowing ends grow to meet in the middle as the voltage on a control grid increases. Cyclops one Tube Radio Tuning Indicators at Wumpus’s Old Time Radios. png 3,508 × 2,358; 22 KB. If the voltages aren't proper there, you add an amp stage to the AVC signal to feed the eye tube. 6E1P Magic Eye project. If the eye is weak or almost dead this is a simple cheap way to brighten up the green glow to the tube . jpg 2,288 × 1,712; 736 KB So-called “magic eye” tubes are display devices, which indicate signal level by the projection of wedge-shaped shadows on a glowing view screen. You have to remove the enclosure around the socket The discussion revolves around the AIYIMA Tube level indicator (mono 6E2), commonly referred to as a "magic eye," which is a vacuum tube used to signal voltage levels in audio equipment. Magic Eye Tube interfacing with a Raspberry Pi – Dr. An example is the Philco model 37-630X from 1936 with its versions with a shadowgraph in series with the 1st IF circuit and 1st detector anode. Circuit symbol for the Magic Eye tuning indicator type 6U5G (b) The 6U5G in a working circuit. 1 MC. jpeg 236 × 500; 11 KB. Finest handmade Tube devices and DIY kits / Alesarmando. patreon. I'm planning to use one as a hole-filler on an amp conversion project - but on perusing a typical circuit I'm obviously missing the finer points. 6V “1629” Electron Ray Tuning Indicator Tube aka Tuning Eye (Circuit of operation) German Site of Magic Eye Roehren Peak Program Meter using Magic Eye Nixie and Magic Eye Tubes Philco Carefully designed by Mr. The tester uses an eye tube (sometimes called a magic eye tube) as an indicator. I have included two circuits boosting the B+ from 250 Hi Folks, This is a cross post from AX84, but I know not everyone here lives over there as well, so thought you might appreciate the videos. This solid state magic eye is The creative "USB Magic Eye" circuit was presented back in 2010 as a handy CPU meter with a retro look and feel. These tubes run in Grid Leak Bias mode. I have done a few mods ie change the coupling caps and re-wire the output to triode. Here is the schematic diagram of a magic eye tube. The input comes from a standard audio output jack (usually 2,2 V PtoP. You make it +250V, electrons smash into phosphor, glow. The magic eye (also called a cat's eye, or tuning eye in North America) is a specific type of such a tube with a circular About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Rock the socket back and forth while exerting a pulling force on the socket. Simpleton. This and the fact that they are rather inexpensive makes it useless to bother finding a substitute for. baker. Electronic Circuit Projects. Or play with a few ideas. It usually glows bright green, (occasionally yellow in some very old types, e. It is the crossover circuit for the tweeters on a 1954 grundig 2030 W/3D 3 speaker radio. Through the use of controlled electron beams, this type of tube can illuminate a variety of circular and There are two main types of tuning indicator. You can find out more about Magic Eye tubes if you search. It is used in a circuit that drives the grid with a voltage that changes with signal strength; as the tuning knob is turned, the ga Check your grid circuit. Fluoresc Based on the same dimensions as the tube board from the Magic Eye VU-Meter (50 mm diameter) this gadget does only one thing: "Winking". All the components are on one circuit board which needs to be powered by a One of the threads on here got me interested in adding a magic eye VU meter to my Magnavox 185 tube amp. The other end of the resistor to the anode of a diode (1000piv). The 1629 is a much later product. The 1629/VT138 Short video on old indicator tubes from valve equipment. Above is the schematic for my circuit, which I hope will open the door for many other creative opportunities for use of the magic eye tube. Music: BLEND by MusM Hello, I just finished to building a preamplifier kit AUDIONOTE L2-Pre, and I would put a Magic Eye Tube (example 6E5 or similar) like power ON indicator - instead of a ordinary LED, but I don’t know how to connect it 😕to the transformer I have made a replacement for a 6E5, 6U5, 1629, 6X6 etc. (I haven't tried these circuits) A subreddit for practical questions about component-level electronic circuits: design, repair, component buying, test gear and tools. spandau. The 6U5/6E5 uses an antique 6 pin tube base and has a 6. Schematic bright eye gogglesUnlabeled organ openclipart Magic eye kit tube ebay pi Figure 4B. Casual Open Front One Size Kimono. The response of the eye tube will change a bit with its plate Museum of Technology Magic Eyes. If you're less than 50 years of age, and you don't tinker with vintage radios or antique test equipment, you're probably unfamiliar with the magic-eye tube. Not all top view magic eye tubes have a circular target. You can hook th who wish to design circuits that use this type of tube. Find more , and products. I replaced it and it works perfectly. Here is a Digikey order for some of the critical parts. baker Meet the magic eye vacuum tubeInterfacing raspberry. For that reason, I consider it suitable only for advanced builders and radio restorers. I had to try them out in my amps. Its a interesting tube with 3 separate bars for displaying various screen patterns. Tuning eyeMagic eye tube pc monitor – dr. Equivalent to the: 6E5, 6E5G, 6G5G, EM-34. ) The output of this circuit feeds the Grid of a 6U5 Magic Eye Tube which needs 0 to -20 Volts DC to fully open or These are tuning indicator for a vacumm tube radios , called "Magic Eye". The 6E5 tube is connected into the diode detector circuit of the receiver by means The EM80 / 6BR5 Vacuum Eye Tube is a vacuum tube which gives a visual indication of the amplitude of an electronic signal, such as an audio output, radio-frequency signal strength, or other functions. Use both hands and 1. Text Chart : Type and Physical Description Text Chart : Type and Physical Description 1939/45. DIYcrap: Magic Eye Tube 6e5c. Joined the electron-ray tube and tuning eye feature in consumer radio sets, regardless of manu-facturer. But people in the antique radio forum mention early test meters having 1000 ohms per volt, which do load down tube circuits. Starting 1924 as an engineer for Westinghouse Lamp Company, Bloomfield, NJ, developing manufacturing and testing equipment for vacuum tubes. He actually had founded a company before that, in 1938, called Philharmonic Radio. There's a more traditional use of the 1629 as a magic eye in my report on a unique usa made magic eye tube used for vu meter circuit. Dangerous voltages may be generated when the circuit is working. The tube is basically a miniature cathode ray The 12. Introduction: 6E2 tube magic eye driver board adopts Douk Audio core power technology, more convenient and simple to use, effectively reduces the power consumption of the circuit, and the PCB uses a large number of SMT components. The Circuit. This tube has several peculiarities: it is probably the only indicator of agreement From Wikipedia: A magic eye tube is a miniature cathode ray tube, usually with a built-in triode signal amplifier. The EM34 is a "magic eye" tube that serves as a visual indicator of signal strength or tuning, used in 1950s equipment, such as this receiver. 10 EM80 Datasheets. 51,561 for #34 It's the 5th vacuum tube that I need to teardown, the final type of tube commonly used in superheterodyne radios - the magic eye tube; and in particular Electronics: Modify a 1629 magic eye tube circuit to a 6E5S tube?Helpful? Please support me on Patreon: https://www. The tube numbers listed in a 'green' color have been tested/verified, those in the color 'red' are from various published Tube 6E5GT or Röhre 6E5GT ID3250, Mag. Octal, IO) K8A, USA 1935 and Indication shown. Each of the two 'vanes' on the 6AF6's display The 6E5/6U5 solid-state magic eye: (Scroll Down for the 6T5 and EM84) Left: solid state ey tube, without diffusers. 3V filament. The RCA 6E5 of 1935 was the first commercial tube . The transmitter circuit consists of a 1626 triode variable-frequency oscillator that drives a of IG25s in parallel, which for Novice be run at 75 watts input. Electronic Circuit Design. The display color is green Cart. Avery Fisher founded Fisher in 1945 and was the dominant producer of hi fi tube gear up through the 1960’s. Real-time circuit simulation, interactivity, and dynamic 2. You could do this in your radio, but it spoils the integrity of it and makes it more difficult for future service people or anyone who you may sell it to. Features: 1 But a magic eye tube may not always be available when you want it, plus some time in the future good condition eye tubes will be rare. The electron ray tube is assembled in an evacuated glass envelope in the same way as is a valve. The wide glass tube envelope is 27 mm in diameter and, excluding the IO base pins, is 88 mm tall. The other employs an electron-ray tube which presents a visible fluorescent display whose area varies according to the control voltage applied to it. RCA Magic Eye Tube. Each of the four Solid State Replacement for 6U5 & 6E5 Magic Eye Tubes 2023-04-03 Update: The circular LED bargraph display that I used for this project is no longer available from the original Ebay sources, and I haven't found any other So-called "magic eye" tubes are display devices, which indicate signal level by the projection of wedge-shaped shadows on a glowing view screen. I know the shadow is controlled by the The display pattern of the 6AL7GT and CV3707 is unlike that of any other magic eye tube (see the patterns section of this site), having three independent control vanes. published 9 years ago EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Arduino Projects Diy. To start, one will need some basic information about the original tube, and its surrounding circuitry. he sold that company in 1945 and started Conditions for the circuit to work: In the radio, the magic eye’s cathode (pin 5) must be connected to ground. It is used in a circuit that drives the grid with a voltage that changes with signal strength; as the tuning knob is turned, the eye display becomes narrowest when a station is tuned in correctly. I took some RCA 6AF6G Magic Eye Tube : The 6AF6 is a traditional circular 'cats eye' style tuning indicator in a small, stubby octal-base envelope. I purchased a 6E2/EM87 kit on eBay and have been having difficulties getting the tube to register at normal in the magic eye tube. For the time being, I'll ask that who wish to design circuits that use this type of tube. That is why in the schematic I linked, there is A 6AL7 magic eye tube installed into a Canadian Westinghouse superheterodyne radio receiver. After assembling my prototype circuit, the magic eye tube ran successfully for eight hours drawing about 190 milliamps. A base PCB plugs into the socket meant for the original 6U5 tube. 6E5/6U5 Circuit board Gerbers: LED_board LED_Control_Board . 6021W tube DAC. I tapped the anodes of the 1626 output tubes and got a nice voltage swing. The 6E1P / 6BR5 / EM80 "Magic Eye" and Other Indicator Tubes. Marian Bucur. The EAM86 A magic eye tube or tuning indicator, in technical literature called an electron-ray indicator tube, is a vacuum tube which gives a visual indication of the amplitude of an electronic signal, such as an audio output, radio-frequency signal strength, or other functions. You could do this in your radio, but it spoils the integrity of it and makes it more difficult for future service people or anyone However, with it’s rectangular bar, the EM84 is easier to mimic than many other types, making it a good candidate for a first attempt at making a digital magic eye. Using an isolation transformer, 120VAC is rectified using a 6X4 full-wave rectifier an The classic “Magic Eye” tuning indicator was a fantastic piece of vacuum tube technology that graced all kinds of electronic gear for a fair fraction of the 20th century. THE POWER SUPPLY CIRCUIT: The PSU circuit, basically employs a 555 timer to set a stable oscillation frequency for the MOSFET, which in turn uses the property of inductors, that whenever an abrupt change of current occurs A magic eye tube is an electronic vacuum tube that provides visual indication, usually in the form of green light, Please use caution if you work with the circuits in this site, as the high voltage required for tube operation can be fatal if misused. The end window with target components. So you saw magic eye tubes in consumer radios, but not meters. I have an electrolytic 20uf 450 volt that I can install in it's place. The whole circuit, excluding the power supply, fit directly beneath the prehistoric Y8A base. - May 2008 An old 6AF6 vacuum electron tube is brought to life on the test bench. Baker. A parallel filament circuit is also required since the filament Another highlight is the true stereo design of the circuit. To close the eye, connect pin 2 (ray control electrode) to pin 5 (cathode). I have not used the DM71 but have experimented with the 6E5 magic-eye tube. Each of the two New Old Stock (NOS) magic-eye tubes are still easy to get, around $5-$15 bucks per tube. In the past, I have found many inaccuracies about eye tubes in substitution manuals, data Magic Eye Tubes and Tuning Indicators. This tube "lit" with bluish placement featuring a fan-shaped strip that opened or closed according to the signal strength. Equivalent tube: EM80, 6BR5, 65ME. This video The 1629 tube has a 12-volt filament so the adapter needs to have a "voltage doubler" circuit built into it. I have constructed a solid-state replacement for the 6U5/6G5/6E5/6N5/6X6/1629 family of tuning eye, electron ray tube, magic eye tuning indicator. I am thinking about several applications of magic eye tuning tubes as display pieces and had a question about their operation. scott m. Old Technology. 00 out of 5 6E5S Magic eye tube, electronic light indicator in glass finger design. Alert to the appeal and success of RCA’s Magic Eye, many radio manufacturers quickly purchased RCA’s license agreement for the electron-ray tube and circuit designs. 6E1P Magic Eye project / Martinparlor. The magic eye (also called a cat's eye, or tuning eye in North America) is a specific type of such a tube with a circular display similar to the Welcome to CircuitMagic, the YouTube channel that is all about DIY electronics, circuits, robotics, and more! We cover everything from basic circuits to complex microcontrollers, as well as a That display is called a tuning indicator, or magic eye tube; in essence it’s a minimalistic cathode ray tube that can sweep its electron beam along only one axis. no tuning indicator was documented as a magic eye tube until after the 6E5 was introduced. The power supply logistics are 2/3 of the problem fitting an eye tube. Graphical Illustration of Types and Patterns . My prototype display consists of two green LEDs, mounted to a rotating disk. The list includes a wide variety The 6U5/6E5 tube is one of the most common magic eye tubes; it was frequently used as a signal strength indicator in 1940s and 1950s consumer radios. It's now the right time to fully investigate the weak Magic Eye tube (EMM803) to see if there is a circuit problem or if the tube itself is weak. But despite it I build and talk about this 6E2 magic eye (valve) kit from Ali Express- GHXAMP World Wide Store, Cost under $30NZ. Compared with similar products, it has much less heating, very lower power consumption and smaller size. Quick view. Although the tubes have different layouts they seem to work similarly. By inserting e. There are even kits with the driving circuitry included. Here's a circuit dug out from my old Radiogram. Its primary function is to get the automatic gain control (AGC) voltage from the radio and pass it to a microcontroller (MCU) board. Magioko 6E5. Magic eye tube audio spectrum analyzer – dr. Simple Magic Eye Circuit Wanted. In the post in section 1, I described the Arduino emulation of a small 6E1P “magic eye” display. In this video I review a kit build I completed recently. Ian Sefchick (mastering engineer at Capitol Records), this tube compressor's circuit is loosely based on a Fairchild 660. ম্যাজিক আই /ইলেকট্রনিক আই । Electronic Eye in Bengali https Any receiver employing a diode secondary detector tube can be fitted with a tuning eye in a few minutes . Schematic of the eye. Diycrap: magic eye tube 6e5cAttaching a magic eye to your radio Magic eye tubeMagic eye tube circuit. The problem is of course the socket is enclosed so you can't easily test the voltage on pins 2 and 4. See my list of Fluorescent Magic Eye Tubes for alternate tube ideas. diyAudio Community diyAudio Store. The mechanical magic eye tube prototype . Two electrodes are on top of each other, separated by a small insulator. The circuit of this drive board adds a first-stage amplification circuit to improve Input sensitivity, input device impedance of Now, you could say that the circuit in, say, any Zenith (they used 6T5 which electrically is the same) or other radio could be modded to accept 6E5 (which would work anyway, but not quite right), and I would agree, but then folks want 6U5, and it is, if new, close to $100. Simple Electronics. This tube has a high voltage drop and in addition, the rest of the radio circuit loads the voltage down . A Magic Eye tube is an old device that was originally used to indicate how well a radio was tuned to a specific station. In addition to the 1626 and 1625s the transmitters include a 1629 magic-eye tube, which was used as a reso- nance indicator with a crystal for checking the dial calibration. It is powered via USB* I wanted to share my results with the EM84 magic eye indicator tube. In the past, I have found many inaccuracies about eye tubes in substitution manuals, data Also, new designs were produced, such as the EM84 tube, which had a vertical bar screen, instead of a circular design, but the ‘magic eye’ designation stuck to them too. ORZEP. Tubes such as the EM80/6BR5, the EM84/6FG6 and the EM87/6HU6 should work just as well with appropriate pin changes. The tube should fit tightly inside the U6A socket. 3V. I will probably tweak some 2. frankln. jpg 770 × 770; 108 KB. The higher the voltage on the eye tube, the larger the A magic eye tube is an electronic vacuum tube that provides visual indication, usually in the form of green light, Please use caution if you work with the circuits in this site, as the high voltage required for tube operation can be fatal if misused. The Magic Eye board is divided into two sections, a boost converter section that takes 12VDC Essentially, its got a tube buffer stage behind a solid state tuner. Here is a circuit of the doubler: This is a Magic Eye tube. It's a variable gain compressor that sounds just as great on your mastering bus as on your individual tracks. com/roelvandepaarWith thanks & p [Mr Carlson] recently restored an old Paco C-25 in-circuit capacitor tester. Eye magic tube tester Meet the magic eye vacuum tube Magic eye tube audio spectrum analyzer – dr. Audio Amplifier. You can import this directly into the Digikey website. This is a step-by-step walkthrough of making a mini headphone jack interface circuit for a Nobsound Magic Eye 6E2 EM87 Tube. Once you've got that, its just a matter of tapping the AVC line. png 702 × 487; 297 KB. Note this was not sponsored or supplied fr The Magic Eye Tube. [8] [9] The earlier types were end-viewed (EM34), usually with an octal or side-contact base. The capacitor has the number "1" on one end and number "2" on the other end. 15uF . ম্যাজিক আই /ইলেকট্রনিক আই । Electronic Eye in Bengali https The DIY Digital 6U5 Magic Eye replacement has two printed circuit boards. Magic eye tube 6e5c. Eye, 1 shadow angle, Octal (Int. 6E2 Magic Eye Tube Kit For Audio Amplifier Preamp Indicator Radio The general tube testers I have used could all test magic eye tubes as well. Thanks to different coloured stereo tube boards even two Magic Eye tubes can perform a stereo display The magic eye tube has similar components to an audio tube: a filament, a grounded cathode, two anodes at differing potentials, and a grid. [1] Amazon. 1 Project Description. Joined 2005. the EM83 stereo Magic Eye tube, you'll get a real stereo dual display with only one tube, the sames as fitting the EMM801 with the new purple colored tube board. Magic eye circuit tubeInterfacing raspberry The magic-eye tuning indicatorAdafruit customer service forums • view topic. Magic eye. baker Shown here is a small compilation of devices that either led to the development of the magic eye, or mimick the operation of a magic eye. Figure 1 is a diagram which Here is a collection of information on a variety of fluorescent magic eye vacuum tubes, which are also known as indicator tubes. It's a 6E2 tube (or "Magic Eye") indicator that is used to measure signal strength. The input goes to the grid of a triode amplifier which has a gain somewhere between 15 and 20 depending on tube type. Steampunk House. The phrase “magic eye” became a trade-mark of Radio Corporation of America (RCA) in the mid 1930s, but the device was also known as the “tuning In Part 4 we investigate the hum issue, align the set and make the magic eye valve function properly. (lists 143 types!) Replacing 6. Note; the EM87 display circuit registers peak values as per RF modulation /tuning, and to show rms, the circuit needs modification for audio VU meter apps. The stronger the in the magic eye tube. The tube was wired in a fashion to indicate signal strength on The display pattern of the 6AL7GT and CV3707 is unlike that of any other magic eye tube (see the patterns section of this site), having three independent control vanes. Eye, 2 shadow angles, Octal (Int. This is a copy of the About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Magic eye tube 6E1P, electronic light indicator in glass finger design. 6 volt lamp between transformers is heater of 1629 Magic Eye Tube. I have attached a sample circuit from a datasheet for an EM84 tube. This 6E5SA's circuit is here. This tube will produce a gain of 15 with an output impedance of only about 5k ohm. Schematic (click to enlarge) EM11 in operation. It is called magiceyetubes com . I changed the capacitor C hold to 0. Hi Tom , On second thought , my guess could be wrong for not only the current difference that you mention , but also because if someone were of a mind to cut all the other pins off of the tube (to make sure the "jumper" didn't interact with the circuit it don't belong in) then they would have no need to rewire the socket , since any orientation is kinda meaningless when the This is a circuit using the magic eye type check tube. Magic Eye 6E5C 2. The 1629/VT138 6E5 Magic Eye Tube AM Regen Radio - 6E5 in this radio performs not only for the tuning indicator, but also for the regenerative detector. 6E5S. It uses a circular array of green LEDs The classic “Magic Eye” tuning indicator was a fantastic piece of vacuum tube technology that graced all kinds of electronic gear for a fair fraction of the 20th century. DuMont (who spent most of the 1930s improving the lifetime of cathode ray tubes, and ultimately formed the DuMont Television Network). If the grid to ground resistor is not large enough it may not work properly. This circuit could be built with any of the more common magic eye tubes. Valve Amplifier The Magic Eye board was the tougher part. To open the eye, connect pin 2 to pin 4. I did a bit of research and found a way of extending that almost dead 6E5/6U5 magic eye tube. The predecessor of the 6E1P indicator was the 6E5C octal lamp. Each bar in the 6AL7's display pattern is split in half; the bottom of each bar can be controlled separately, while the top section of both bars are ganged together into The other side of the resistor connects to pin 4 (the eye tube target). I purchased some Russian 6E1P (6BR5/EM80) Magic Eye tubes a while back and have been anxious to build a level meter for my Thick Mary HO. One consists basically of a meter, the detection of whose needle indicates the accuracy of tuning. From my understanding it is a basic buffer audio amplifier followed by a DC coupled stage that rectifies the negative half cycle to provide the negative DC to drive the Magic Eye Tube. Member. The Chanalyst debuted in 1938, and was the radio serviceman's dream. The "second anode" is the Glow Screen, not an electrical signal point. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. I thought there might be value in coming up with a potential substitute– something that acted like an eye tube that could replace them in applications like antique radio restoration and Eyewear anatomy diagramSchematic hyper-vision goggles Definitions templesBright-eye goggles. tuning eye, tuning indicator, magic eye, electron ray tube. Features: 1 The EAM86/6GX8 tube is a fairly rare tube but it can usually be found on eBay. August 23, 2024 by CJ Abate on Circuits Introduction: 6E2 tube magic eye driver board adopts Douk Audio core power technology, more convenient and simple to use, effectively reduces the power consumption of the circuit, and the PCB uses a large number of SMT components. Figure 4B. Participants explore various aspects of the 6E2 tube, including its power requirements, alternatives like the EM87 and EM84, and the use of different power Using a subminiature magic eye tube as an audio spectrum visualizer - Page 1 EEVblog Electronics Community Forum. 7 to 9. Older people remember these beautiful green lights with tube technology: recorders, amplifiers, radio receivers. Discover (and save!) your own Pins on Pinterest I have an Eico 950B capacitor bridge that I have recapped that uses a 1629 magic eye tube as its display and the infamous 6X5GT rectifier tube. It uses EL82 (6п18п), which can be easily replaced with ЕL84 (6п14п) and a simple preamp with ECC88 (6н23п) or any other of the ECC8x series The most common type of variable indicator is the magic eye tube. The 6AL7, manufactured by Tung-Sol as well as other companies, is a tuning eye tube with an unusual triple-bar pattern. Jan 17, 2021 - This Pin was discovered by Erhard Krueger. For a verbal description click here. 29, 1901 in Brooklyn NY, died Nov. g. Scott M. As there was limited wiring diagrams for this ready built kit available from Aliexpress, eBay One other thing ( and i may be wrong, as with the above), depending on the magic eye tube, and vaguely remembering the vaguely learnt theory of opamps, you might get only the signal to pass to -6. Build 'Cyclops' a 1 tube radio using a magic tuning eye: For those who have a spare 6e5 magic eye lying about, this is a novel functioning eye regenerative set using the eyes triode as detector, and the aperture as a tuning indicator that Attaching a Magic Eye to your Radio Any receiver employing a diode secondary detector tube can be fitted with a tuning eye in a few minutes . [5] [6] [7] The RCA 6E5 from 1935 was the first commercial tube. You have to remove the enclosure around the socket I could not find a schematic, but drew the circuit diagram based on the PCB on a piece of paper in order to understand the circuit. good thought though! S. So I may fit a 6e5s (Cyrillic 6E6C) and attach the EM34 with a note and circuit changes inside the cabinet. One wire of the heater supply must also be connected to ground. Diy Bluetooth Speaker. org. I've found a very comprehensive page concerning 'magic eye' tube substitutions. Vintage Diy. This video Advantages: ① The circuit of Magic Eye has been redesigned overall. Please pay attention to safety. Three common types are shown operating with a low frequency sine wave modulating the grids. 21, 1925 serial no. 13 The Magic Eye Tube in a Heathkit Capacitor Tester. Diagram of the eyeTube 6e5 magic eye indicator Aqueous humorPanoramic night vision goggle (anvis) 3d model $9. g FC's Fluorescent Magic Eye Tubes (C) G. To add to The Magic Eye is already in the radio - I bread boarded the circuit - i used the radios 200VDC as the VCC - which is converted to 24VDC by the Xener diode. pdz wjdpur adxrk molfcb fcjng zzlyz qath xfucvz yhwe sfgafd