I normally use MJE 340/350 for HV power amps but they are only good to
What is the next logical step up in voltage using the most commonly available part, and preferrably not TO-3?
Desired bandwidth is 10KHz to 2MHz.
Thanks for any advice.
Louis Kendall
"Louis Kendall"
** A noval or octal base valve is good at those voltages.Triode or pentode......
** Consider mosfets. 600 and 800 volt ones are common......... Phil
Regards,
Boris Mohar
Got Knock? - see: Viatrack Printed Circuit Designs (among other things)
void _-void-_ in the obvious place
Hi Louis,
I don't know exact details about your current topology. If you can use a topology that uses NPN transistors only (or N channel MOSFETS), you can use high voltage deflection transistors (for CRT monitors/ television) or high voltage IGBTs.
I can imagine that this doesn't solve the bias issues, so probably there will be some trade-offs. In case of BJT's, bias current will be higher because of low HFE.
Also current sources (with PNP) require different design (series circuit).
Best regards,
Wim PA3DJS
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