[email protected] schrieb am 11.04.04 22:49:27:
Hello all,
I nearly finished my 50V/15A cont. powersupply.
Coming week I'll do some tests to see if it works well.
Unfortunatly I can't test the current limiter, as I doesn't have
a suitable dummyload.....
I think this was one of the most time consuming parts to built.
Next step will be building the G0MRF transmitter.
Meanwhile I received some FET's etc, but I'm still missing
some of the difficult parts, like the TC4426, H11L1 (optocoupler)
and the 3C85/3C85 cores.
I really can't get them here.
Anyone in a Euro-country who can help me to get them for
a reasonable price??
Dick, pa4vhf
Dear Dick,
I recommend cores from Oppermann-electronic.de
Oppermann Elektronik, D-31595 Steyerberg
Core BRK1667 EUR 8,62 62*31*20mm) is a good choice, You may stack two many of them. Other cores are also in catalogue LRK380, KRK261. Any core with a relative Permeability of 250...1500 will do it.
Or You go to Ham-Radio fair at Friedrichshafen at 27 June 2004 and search the flea market. If You have question about magnetics and the materials, ask me. I have professional experience in developing power supplies. (Resonalzwandlerschaltnetzteile; "What a long word - it must be important WE0H").
The FET-Drivers You can buy at Buerklin.com, DR. Hans Bürklin, München. I have
done so. The minimum order amount is about EUR 25,--.
You can choose nerly every optocoupler. They all switch rather slow. My choice
is Siemens-Infineon CNY17, SFH617.
55,
Hans-Albrecht Haffa
DK 8 ND
cba, qrz.com. F: ++49-7161 - 87 847.
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