What is the role of the gate stopper on the mosfet CCS?

K&K Audio / Lundahl Transformers

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I am using the K&K CCS in the tail of a differential driver (ecc99; B+ =380V, i=21mA, Ra=9k1 and quiescent plate voltage at 200V). After a few minutes on, plate voltage suddenly equals B+. I now wonder what is the role of the gate stopper and whether it could be involved. Any help will be more than welcomed. Sincerely,
Francois

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Topic - What is the role of the gate stopper on the mosfet CCS? - Francois Robichaud 19:33:23 09/17/06 (6)

Re: What is the role of the gate stopper on the mosfet CCS? - KevinC 06:15:37 09/18/06 (5)

Re: What is the role of the gate stopper on the mosfet CCS? - Francois Robichaud 07:21:05 09/18/06 (4)

Re: What is the role of the gate stopper on the mosfet CCS? - KevinC 11:08:56 09/18/06 (3)

Re: What is the role of the gate stopper on the mosfet CCS? - Francois Robichaud 05:55:18 09/19/06 (2)

Re: What is the role of the gate stopper on the mosfet CCS? - KevinC 05:40:41 09/20/06 (1)

Most grateful thanks (NT) - Francois Robichaud 06:42:19 09/20/06 (0)

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