John,
I have some EU 230V single phase wall outlets left over which you can have
since I threw out these outlets in my garage and replaced them for two 5
pole three phase 400 V outlets.
My MIG-welder and amplifier HT power supply are now standing side by side
and enjoy the stiff AC supply voltage available from these sockets. @ 10 kW
draw (distributed over 3 phases) mains sag is 7 VAC @400 VAC
Cheers, Dick
PA3DUV
----- Original Message -----
From: "John T. M. Lyles" <jtml@lanl.gov>
To: <amps@contesting.com>
Sent: Wednesday, May 31, 2006 5:36 PM
Subject: [Amps] new power transistor TSPA
>I would like to point out the new Philips LDMOS transistor, BLF369.
> It is the first new LDMOS device to replace the venerable MRF151G
> DMOS (Motorola) design which has been copied, improved, and sold into
> thousands of amplifiers worldwide.
>
> I am waiting to test the new part, rated CW up to 225 MHz, with 500
> watts, off a 32 volt drain supply. Gain is 18 dB up there. Obviously
> this is not going to be your routine HF amplifier part, but for VHF,
> UHF power, it looks very attractive, at $225 in small quantities
> (Digikey). Has anyone here had any experience with this part yet?
>
> We have need for driver stages for our big tube amplifiers at 201
> MHz, and up til now, have used MRF151G -style DMOS amplifiers. We
> bought a sample pallet for 300 watts from one of the Italian makers
> last year, but a big improvement in stage gain and power can be had
> with the new LDMOS part from Philips.
>
> 73
> John K5PRO
>
>
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