For this we use a halogen lamp transformer from the shop or any other transformer with minimum 10 va and the secondary from the range between 12 and v ac. Vintage european and us 12au7, ecc82, 5814a, 6189, 7316, cv4003, and m86 tubes in stock now, fully tested and guaranteed. Vacuum tube accessories vacuum tube amplifier sets vacuum tubes wire yellow jackets tube converters. Quick reference, connected to earth, the more favourable triode section of the tube with regard to hum. The difference again is that the gold pin tubes are a little smoother and richer sounding and the long plates have a fat, thick tone in the low mids. Standard replacement for all circuits requiring 12au7ecc82 types. However, you do need to follow some standard tube layout and construction procedures. Somebody told me that 8381s are interchangeable but 83 and 82 are not. Text in other languages may differ dimensions whd incl.
Vacuum tube 12au7 ecc82, jj electronics antique electronic. The difference again is that the gold pin tubes are a little smoother and richer sounding and the long plates have a. The ecc82 is a dual triode vacuum tube with medium gain and low noise characteristics, making it ideal for hifi audio equipment and instrument amplification. My pre came stock with a set of the jj ecc82 s gold pin 12au7. The thin glass tube envelope is 19 mm in diameter and the length excluding the b9a base pins, is 48 mm. The jj ecc82 valve double triode is used in preamp circuits, and phase splitter applications. Ecc802s 12au7 ecc82 tube srpp preamp build details. Diy ecc802s 12au7 ecc82 vacuum tube srpp preamplifier. Pdf converter convert files to and from pdfs free online.
All 12at7 ecc81 6201 cv4024 12au7 ecc82 cv4003 5814 12ax7 ecc83 cv4004 5751 6922 6dj8 7308 pcc88 6sl7. With the very large number of vacuum tubes or thermionic valves that were produced and as a result of the multiple vacuum tube numbering systems that were in use, there are generally equivalents for most types of tube. Smallpdf pdf converter operates fully in the cloud. Please note that we can only convert videos up to a length of 1 hour the limitation is necessary, so the conversion of any video will not take more than a couple of minutes. Pretty much everything in the preamp is standard tube amplifier construction.
The use of this valve will give more headroom and clarity and lower the gain on a. After finished my simple 12ax7 tube preamp, i decided to try other medium mu tubes, including this 12au7 and also the 6922. Main problem is the heavy use of nowunavailable ironcore ceramic coil forms. Just curious as to what the sonic character of the long plates might be compared to the ecc82. The overall voltage gain of the circuit is about 8. If you cant find what you need here, try duncans tube data sheet locator. Headphone amplifier and 12au7 tube is powered by just 12v dc voltage. Double triodequick reference dataanode current ia10,5ma datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. In television receivers the ecc82 was used as frame and line timebase. Tube ecc 82 or rohre ecc82 id1050, double triode, noval, b9a and universal shown. The ecc82 valve also known as a 12au7 is a low gain preamp valve used in guitar amps and hifi ampliers.
Hi there, ive now listened and analyzed countless 12au7s and its equivalents and thought id give my opinion on my current favorites. Frank philipse pocnet mirror patrik schindler, 12au7. Ecc82 pdf, ecc82 description, ecc82 datasheets, ecc82 view. Double triode,alldatasheet, datasheet, datasheet search site for electronic components and. The thin glass tube envelope is 20 mm in diameter and the length excluding the b9a. Dec 21, 2014 output spectral analysis of tube buffer with variable second harmonic, and volume control. Tc tubes and audio repair repair services include tube and solid state gear, turn table setup, and tubetesting in twin cities metro area. Output spectral analysis of tube buffer with variable second harmonic, and volume control. The ecc82 or 12au7 is a miniature 9pin low gain 17mu dual triode tube.
Tube amplifier setsvacuum tubeswireyellow jackets tube converters. Jj ecc82s versus ecc802s tubes canuck audio mart hifi. Double triode, ecc82 datasheet, ecc82 circuit, ecc82 data sheet. The videos are always converted in the highest available quality.
Double triode quick reference data anode current ia10,5ma transcoductance s2,2mav amplification 17 heating heating is indirect by ac od dc, with serial or parallel supply. It was widely used, in specialquality versions such as ecc82 and 5814a, in presemiconductor digital computer circuitry. This tad 12au7a ecc82 has especially strong systems which are selected to provide. Vacuum tube 12au7 ecc82, jj electronics amplified parts.
We have the ecc81 ecc82 ecc83 was introduced specifically for audio applications way back in 1954 to replace the earlier 6sl7 octal based valves. The 12au7 ecc82 is a twin triode vacuum tube, it is very popular in the audio world because it is rather rugged and can be operated at lower voltages. You can access the free pdf file converter anywhere, with an internet connection. Tube depot not only sells vacuum tubes we also carry an extensive line of tube mount sockets, holders, adapters, bases, tube retainers and much more. Ecc82 datasheetpdf list of unclassifed manufacturers. Ecc82 datasheet, ecc82 pdf, ecc82 data sheet, ecc82 manual, ecc82 pdf, ecc82, datenblatt, electronics ecc82, alldatasheet, free, datasheet, datasheets, data sheet. The 6sl7 type of valve has the same base as output valves such as the 6v6, 6l6, el34 etc and were bulky, so the ecc8x. See also ecc82 from mullard that designates the valve with both the mullard ecc82 and the american 12au7 designations. This 12au7 offers smooth tones and clear definition which is why its no. Tube amplifier sets vacuum tubes wire yellow jackets tube converters. Vacuum tube 12au7a ecc82, tube amp doctor, premium selected.
Ecc8212au7 page 1 of 4 franks electron tube data sheets. Ecc82 datasheet, ecc82 datasheets, ecc82 pdf, ecc82 circuit. Vacuum tube 12au7a ecc82, tube amp doctor, premium. However, for reasons which will become obvious, the ecc82 is the valve of choice, so i used this for.
Compress, edit or modify the output file, if necessary. Welcome to tubedepot javascript must be enabled to use this site. Etc2, alldatasheet, datasheet, datasheet search site for electronic components and. Another common name for the 12ax7 tube is ecc83 and for premium versions the 7025 and ecc803 audio tubes. The output stage of the circuit is a cathode follower and is suitable to drive a low impedance amplifier. The advantages of such a line stage are much the same as those when a srpp is used as a driver. Please see the substitutes at the top of the page for more details. Heres how to convert quicksilver and otheramplifiers from 8417 to 6550kt88kt90. Ecc82 circuit to work with 6h6p first cut the traces or wires joining pins 4 and 5. Just unplug your 12ax7 tube, plug in the adapter, and then plug in 6n2p tube and you are ready to rock. Tube socket converter adapter russian 6n2p or 6n2pev to 12ax7 ecc83. Ecc82harma retro harma valves the harma ecc82 is designed on the ladder plate design that was used by mullard and philips.
This schematic below is a simple two stage linelevel preamplifier using a single 12au7 ecc82 tube per channel. The use of this valve will give more headroom and clarity and lower the gain on a over distorted valve amp. Another 12au7 variant from jj which is a long plate gold pin version of the ecc82 tube. Twotube converter, using the 12ek6 pentode as an rf amp in front of a 12ad6 pentagrid converter, with a switch swapping out a crystal and coil for each band. Novaltypical characteristics and operating conditionsanode voltage datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Vacuum tube 12au7 ecc82, jj electronics image 1 vacuum tube. My pre came stock with a set of the jj ecc82s gold pin 12au7. If we actually want to design a simple, puretube line stage for hifi i use the. Originally, the 12ax7 ecc83 vacuum tube was introduced to be a superior option for lower noise and microphonics over the 6sl7 tube that was commonly used in the 1940s.
J j electronic ecc802s gold pin 12au7 factory data sheet. I tried ecc81, does a good job, but need less gain for sure. Classa 12au7 tube headphone amplifier circuit wiring diagrams. Eirc electronic tubes factorydata sheetecc8212au7page 2 of 4telephone. We test each jj ecc82 preamp valve on our analogue and digital testers and give a 120 day warranty. The design is exactly the same as the 12ax7 preamp, it is a single gain stage triode tube with cathode follower. Download a zip file of all 12au7 pages byclicking here. Our service is for free and does not require any software or registration. The entire 1945 taylor tube catalog in pdf format note, 1. The 12au7 is probably the first noval b9a tube ever, registered on october 18, 1946, in the electron tube registration list, followed by the 2c51, registered on november 25, 1946. Due to the combination of low gridplate capacitance and medium gain, it is suited for use in audio voltage amplifier with an extended frequency range. The tool will instantly upload and transform the file into a pdf. Guys, have quite expensive vintage amps and to increase headroom of input stage i want to put ecc82 tube instead of schematics 83. The 6sl7 type of valve has the same base as output valves such as the 6v6, 6l6, el34 etc and were bulky, so the ecc8x family made a lower power, much smaller preamp valve.
To my knowledge this tube has been produced only in soviet union the oldest sample i found was. In most cases the tubes manufactured to the european system have an exact equivalent tube in the american system and vice versa. It has a centertapped heater filament so it can be used in either 6. The tube is popular in hifi vacuum tube audio as a lownoise line amplifier, driver especially for tone stacks, and phaseinverter in vacuum tube pushpull amplifier circuits. I see there is a ecc802s gold pin version that has long plates. Vacuum tube 12au7a ecc82, electroharmonix amplified parts.