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Tuesday, November 15, 2016

25 Watts From a Single IRF510

I should have tried this a long time ago.  It works great.  The power supply that I picked up at the Kempton Park rally many years ago  happens to have a 25 volt unregulated output.  Coincidence you say?  I think not.  TRGHS.  

 Farhan provides a really excellent description of how to do this:


  1. You can do everything with IRF, when You use more than 20V ;-)
    Just 8V difference - and you can not recognize Your device...

  2. Back in the 90s, used the 510 to get 10W @ 30Mhz on 13.8 volts. Never used it on the air or much beyond playing on a sheet of copper clad mounted to a heatsink. Just saw it in a box a couple of weeks ago. Built it from an article from 73 magazine, November 1990 is what is in my notes.

  3. I have a bunch of boost converters here that are doing nothing and are rated higher than the needs of the Bitx 40, I have been thinking of putting one into the box and bringing the power upto 10W out, SSB QRP levels, not a massive increase, but enough to increase my chances of success when out portable.


  4. Did anybody test something like that as a PS for PA? Looks cheap and interesting.


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