El34 pinout

  • The EL34 are biased for idle Pda = 15W which seems very low, but they have less tendency to overheat, and they will last a long time. There is adequate OPT construction information further down the page, but DIYers might just buy a Hammond 1650TA. It is 14lbs, or 6.4Kg, with load ratio, ZR = 1k9 : 4r0, 8r0,16r0, rated for 120W.
The EL34, 6CA7 and KT77 also have similar pin outs. Be sure to check out our EL34 / 6CA7 / KT77 tube reviews page for more information regarding the sound qualities of these tubes. Many of the EL34, 6CA7 and KT77 tubes listed here also have customer tube reviews.

Tube amp Schematics index page There are over 3500 Tube amp schematics and other types of schematics in the EL34World Schematic library. There is also a huge library of effects and solid state schematics.

Nov 17, 2016 · Pinout EL34 is a glass envelope power pentode having a plate dissipation rating of 25 Watts with convection cooling. It is intended for audio frequency power amplification service in either pentode, ultralinear or triode connection and single or push-pull/parallel applications.
  • Schematic v3.0 EL34 EL34 GZ34 50uF 500V 27K 22K 3W 5.6K 5.6K 1.0 1W 470 3W 1K 3W 470 3W 1.0 1W 220K 220K 10K 1W 100K 100K 100K 470K 470K 820 100K.68 50V 100pF 500pF 1M-A normal 2.7K 820 330uF 16V.68 50V 1M-A bright.022.022 ECC83 12AX7 ECC83 12AX7 ECC83 12AX7 33K 250K-L treble 1M-A bass 25K-L middle 1M-A master volume 1M 470 10K 1W 5K-L presence ...
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    Jun 21, 2016 - EL34 Single-Ended (SE) Tube Amplifier Schematic with EF86 input stage. Schematic is from Build your own Audio Valve Amplifiers by Rainer zur Linde.

    The preamp design is straightforward, using EL34 pentodes wired as CCSs as the plate load for the low-mu triode. The triode tube has two sections, and one is used for each channel. The schematic for the amplifier is shown in Fig. 1. Note that on the EL34 CCSs, the screen grid is bypassed by a large ca- pacitor to the cathode of the tube.

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    May 10, 2009 · This is what I posted from what I found from modifing a Crate V5 that also has an EL84 Driving the EL84 with a signal generator have calculated the capacitance from plate to control grid to be approx 2.2pf in triode mode with the Miller effect this becomes approx 30pf this in parallel with the 220pf has a slight effect on the high frequency roll off of the EL84 (20KHz in pentode mode 19KHz in ...

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    I traced the preamp circuitry up to the output of the tone stack, and it's *identical* to the Oct. 21 1966 schematic marked 'original version'. I didn't get around to checking the phase inverter and output (Telefunken EL34) stage yet.

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    Most notably in the US, distributor Unicord began replacing Marshall’s tried and true EL34 power tubes with the seemingly more reliable 6550s. Marshall also updated the cosmetics of the amp with a control panel that spanned the entire width of the cabinet with Jim Marshall’s signature, a black cloth grille, and a much larger script Marshall ...

    Pinout: From a DTE perspective (the DTE transmits data on the TX Transmit Data line, while the DCE receives data on this line). View: DTE perspective, looking into the male connector. Pin No.

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    Jolida SJ302/SJ502 integrated tube amp with EL34/KT88 jolida-sj-302a-sj-502a-amplifier-schematic.pdf Knight 10W 6V6 push-pull tube power amp Knight 10W.bmp

    there is -37Vrms. So the EL34 is working like an output tube where there is about 50% ultralinear taps, and its maximum pentode gain of about 120 is reduced to 12.9 or close to the triode µ of 9. The EL34 is thus made to work more linearly than pentode, and in fact as linearly as triode with a

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    R.E.L. 646-C "Precedent" FM tuner schematic Revox 20W P-P EL34 amplifier schematic Sansui 8080db / 9090db service manual. Sansui 1000A stereo receiver schematic Sansui TU-70 AM/FM stereo tuner schematic Sennheiser VKS-203 stereo amplifier schematic Sherwood S-3000 FM tuner manual w/schematic Sherwood S-5000 stereo amplifier schematic

    The Carvin Tube 100 stereo power amp shipped with 4 EL34 output tubes and cranks out 50 watts in stereo mode and 100 watts bridged. (Click image for more detail) On the front are level controls for each channel, signal indicator lights, and power on-off/standby switches.

Whether or not you cathode bias EL34/6L6/6550/KT88 is purely a matter of preference. Most push pull EL84 amp currently built are fixed bias. Yes, you get a smaller voltage drop with EL84, but typically EL84s run less voltage anyway...it's a moot point.
10000/5000/2500 Rla-a Up to 20W at 20 Hz. For 5881, El34,6550, 6L6,KT66 etc. Primary can be configured for various loads without loss of bandwidth. 150 mA per side. Cathode feedback winding provided. 20 Hz to 30 kHz. Size L
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