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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I have bought from him before. The grid wire also may not be placed exactly the same in relation to the cathode and plate.

Let me try again. Exceeding the Va and Va b limits usually results in destruction of the tube. With a constant grid to cathode voltage, if we change the dataasheet to cathode voltage, the plate current will change.

Jim My apologies to the OP for getting off topic. See numbers 4 and 5 for setting the input and driver tubes plate voltage on the PDF Link provided. Let’s keep it simple.

In the circuit below is biased by applying a bias voltage to the grid via R2. There is no problem supplying 6. Mu amplification factor is theoretical gain.


RCA have a special range of tubes, the “red base”. To know the tube life you have to measure the tube S, Ri, mu etcetera Simply perception, which in the end is all that counts.


As far as transconductance being reduced, reduced transconductance will increase the plate resistance, thus lowering the high frequency response. This string will be long gone. E55l2 on 25 Jan The input and driver tubes datasgeet each channel have to be biased. The ‘s anode dissipation limit is 1. If however, we have a voltage across theand a current flowing through it, we are dissipating power within the tube. The ddatasheet winding the grid wire for each section has tolerances, thus the grid wire for each triode section can and usually is a little different.

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

TDSL Tube data []

Next, I am not going take sides, to explore operating a 7. ACHiPo on 15 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. One matched pair low noise per channel. For instance, no information is given on how the cathode actually works, space charge etc.


A few reasons why two sections inside of one envelope will cause the two sections to measure differently. Manufacturer’s specs will be conservative.

Differences in Plate resistance?

6922 Datasheet

datasneet The cathode material may not be homogeneous across the nickel support. Cheers Steve Logged E55l2 Jr. Maximum Allowable Anode Voltage and Anode Dissipation Moving in the opposite direction along the load line, we use the harder and harder, until finally there is no voltage across it.

The lower the plate current, the less the cathode is cooled by electrons leaving. Slightly different spacing between each turn of wire. 66922 what it’s worth there adtasheet a tube life test that can be preformed on a used tube where the filament voltage is decreased in the same manner as I did in my test above.

My preamp is a Sonic Frontiers Line One. For general public, consider evaporation of water cools the remaining container of water. What do you or those costumers mean with tube life?