| Fuling |
How about this circuit for driving a Mosfet power follower?
ECC86 is the european version of 6GM8, before anyone misreads and asks why I´m using ECC88 (6DJ8) at such low plate voltage.
A short explanation of the schematic:
The triode is of course the actual gain device, operating at 15V 2mA. The plate is loaded with a 2SK170-based CCS and direct coupled to a cascoded Jfet White follower.
This *should* give that whimpy little triode pretty much optimal circumstances to do it´s job as a voltage gain stage.
IME this tube is hardly capable of driving anything by itself, but this follower should be a very easy load. |
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| JoshK |
| This circuit looks pretty cool to my newbish eyes. Have you built it yet? |
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| Fuling |
| I´m working on it, will probably finish it tomorrow |
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| Fuling |
The circuit is built and tested and the results are very promising!
50kHz with a IRFP260-based follower on the output is no problem.
I´m planning to run much more tests on this one later, when I can borrow some better test equioment. |
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