Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. The is described as being for use in cascode circuits and as a multivibrator and cathode follower in References: Datasheet & private correspondence. E88CC-TK TUBE DATA SHEET. Mechanical. Also known as the , the E88CC was originally targeted for test equipment and radar. The E88CC has.

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What I discovered was for a tube whose sections MICROMHOS tested very close or the same that tube was the best candidate for achieving the best equal bias voltage for the plates of each section of the dual triode tube.

Steve, You’re playing well within bounds as far as I’m concerned, and I’m learning a heck of a eatasheet in the exchange, so thank you.

6DJ8 – Wikipedia

The cathode material may not be homogeneous across the nickel support. I hope I understood and properly answered your question s Jim. The final limitation is the maximum allowable cathode current Ic. The plate structure may not be placed exactly the same in relation to the cathode and grid.

Let me try again. My preamp is a Sonic Frontiers Line One.

You can read some reviews of one of my poor designs here. Moreover, some of this vapour tends to deposit on the grid and give rise to what is known as grid emission when the grid itself 6922 electrons and draws current commonly known as negative grid current Again, just for a triode.


The limit of datasheeh that the can dissipate is known as the maximum anode dissipation and it appears on the datasheet. Not a lot better than before I replaced its 15 year old tubes.

Non-linearity is particularly profound close to the Volt point. AC Yes but it is well within the context of the thread.

6922 Datasheet

Unless each section of the tube is closely matched good luck meeting 7’s requirements. So I have trouble believing your information. Logged Steve Industry Participant Posts: Here are the tube vendor’s test readings of some of the his tubes markings on each tube box. ACHiPo on 27 Jan RV3 raises them both up or both down.

Datasheeet just consider the triode, and keep things simple for ease in understanding.

The Va b is the maximum voltage to which ‘s anode is allowed to swing under signal or cold conditions and is about VDC for the I guess I just did a poor job of asking what I was trying to find out. You can’t set the two plate voltages of each tube individually.

6922/ECC88/E88CC double triode

I take that as a given when dealing with a well known and well respected tube vendor. ACHiPo on 17 Jan Of course he is very careful about the sound of his reference system.

The only reason I am posting now is to prevent the public from being misled with false information. So i won’t count on a very long life for a normal tube.

With this tube the difference in imbalance voltage between the two plates was less than 1Vdc. The maximum allowable cathode current for the tube is mA. That depends on the circuit specially if it is dc coupled and the components also datashdet it is possible that this can happen.


@ The Valve Museum

E55l2 on 28 Jan The filament may not be perfectly spaced from the nickel sleeve, inside the cathode sleeve, causing hot spots etc, thus more emission on some areas of the cathode.

Steve on 27 Jan Section 1section 2 No way this tube dstasheet be biased in the VT50 as a driver tube let alone an input tube. It seems to support Brent Jesse’s and Kevin’s position that 7DJ8 tube datasbeet could be longer at the lower heater voltage, but FRM and E55’s contention that it’s not good practice are supported as well. Mu amplification factor is the change in plate to cathode voltage with a change in grid to cathode voltage,, with constant plate current.

I ran a test using datashwet used EH tube. The grid wire also may not be placed exactly the same in relation to the cathode and plate.

His close matching of the last set of tubes I bought from him might work as driver tubes in other audio circuits just fine, but not in 66922 ARC VT50 amp.