Classe E

[Johnnie]

Anyone working on Classe E AM/SW Transmitters?
http://www.classeradio.com/

The fet's are cheap.

this is a SW transmitter 6.3 Mhz pirate band. with programmable ocsilator 1-100 mhz true USB.
into 74hc240 wich drives the FET IRF510 (15 watt)

http://home.wanadoo.nl/bertnijholt/Peppermint%20compleet.jpg

So you guys work with that too? cause it's cheap an high power like 1 KW in Hexfet Classe E.

[tzitzikas]

no yet, but i am looking for an amplifier which can amplify a weak r.f output from a pll (mw band 522-1611 KHz) [50 mw approximately] and which can provide at least 2 watt r.f power. (5 watt is ok)
do you have any relative schematic with details?? if yes, then attach it here.
i have tried to experiment with the IRF series but the result wasn't very good.

[Johnnie]

the IRF510 can produce 10 a 15 watt with 500 mw drive.

i found some links for you
this is AM

http://www.geocities.com/m3ghe2000/circuits.html

This is SW
http://www.geocities.com/thecorsairtx1/Home.html
http://www.geocities.com/radio107mhz/

hope it helps, im looking into classe e each day. hope i get to learn much more about it,

John

[Johnnie]

You can also connect the PLL to a 74hc240 wich gives 500 mw to 1 watt.
and drive it direct to a fet like irf 510 with low pass filter.

here is the original schematic http://www.qsl.net/lu8eha/


John