OT, 100 mosfet watt amp?
- I'm looking for a 100 watt mosfet amp schematic, something that can
be linear and pit together cheaply. I think it was memtioned on this
list, but I can't find the message in the archive-or maybe it was on
another list completely.
Can anyone point me in the right direction? Note that I AM NOT
looking for the 100 watt backpacker amp-which uses very expensive
motorola bipolar trasnsistors.
- Very Good. I knew one of you guys would make the 510 work. Just make sure you have enough heat sink to keep them cool. I forgot CCI had all the old notes. Down load them all as they are great references. I've built a few of their kits and found they work well down to 3 mhz. Below that the transformer cores are not quite enough reactance. effeciency suffers a bit. I have never tried RF feedback with power supply fets but might be worth doing for SSB amplification to improve distortion. Frank WA1GFZ
cesco12342000 <cesco1@...> wrote:> http://www.communic ation-concepts. com/application_ notes.htm
I got my 2*irf510 PA working, 25W at 15.0V,
1.3 W input from softrock.
I have seen some nice things in the
application notes, especially the output
to imput coupling. I dont have that and
need two 25ohm resistors on the gates to
get a decent linearity.
Seems these irf510 need a lot of gate
current when switching to ON state.
The PA has two separate low-passes for
80m and 40m. TX/RX switching with relays.
Would be nice to have a "tony design" PA
kit for the softrock ....