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The RF Workbench / Re: What's the highest frequency people have tested IRF series MOSFETs?
« on: December 08, 2024, 2319 UTC »
I did find these schematics from WSQT FM pirate designs on the homebrewpirateradio groups.io ...
5 watt IRF510 driver
https://i.imgur.com/2hnudUy.jpeg
23 watt IRF510x2 PA
https://i.imgur.com/oeATltP.jpeg
Took me a while to remember where I saw those schematics back in the day as they always peeked
my curiosity.
I have a lot of junked PSU and controller boards with other interesting mosfets including smaller ones
compared to the IRF510 which has me itching to dig through my scrap and look up their gate capacitance
and other parameters to see if I can find some that work up into VHF even though they were absolutely
never intended to
Maybe worth a shot to experiment since I already have a 1 watt driver to force into their gates and
some free time to dork around at the workbench.
5 watt IRF510 driver
https://i.imgur.com/2hnudUy.jpeg
23 watt IRF510x2 PA
https://i.imgur.com/oeATltP.jpeg
Took me a while to remember where I saw those schematics back in the day as they always peeked
my curiosity.
I have a lot of junked PSU and controller boards with other interesting mosfets including smaller ones
compared to the IRF510 which has me itching to dig through my scrap and look up their gate capacitance
and other parameters to see if I can find some that work up into VHF even though they were absolutely
never intended to

Maybe worth a shot to experiment since I already have a 1 watt driver to force into their gates and
some free time to dork around at the workbench.