Let's pool our resources to find some used SITs, power JFETs etc

[e_fortier]

Sounds great, looking forward to see your design.

 

[Svjatoslav]

??

You forgot KP801.
I see some number only KP802.
But without measurement it doesn't say anything.
Because the current has a spread from one hundred mA to about 2.5 A.
(Voltage 10 V, offset zero)
.

 

[bepone]

@Svjetoslav, i took at that time chance to get KP802A and KP926A, KP801 was not available on any store.

 

[jpatay]

Svjatoslav gave me KП801Б so that I could test them in the circuit of the circlotron. The quiescent current is stable. The output stage is powered by 20 V. Quiescent current is 90 mA, with a shift to the KП801Б -10 V gates. KП801s have been specially designed for amplifiers. Very good transistors, but the spread of parameters is very large, the same as in the KП802. Square wave 60 kHz: