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RE: Circlotron with MOSFET output

Posted by tyu on December 12, 2011 at 08:52:54:
So the grid stop resistor connected near as possible to tube socket is mandatory , and some small value 100Pf/1KV capacitor connected in parallel with driver transf. primary coil is good to for prevention of oscillation in RF range .

Great grid stop,info for anyone Diying tube amps,preamps any tube...
Thanks for the post