[ARC5] More on that +/- 48 Volt DC-DC Converter

David Stinson arc5 at ix.netcom.com
Sun Dec 22 12:58:06 EST 2013


A few people asked so here's a photo of the little "brick"
supplying +97 VDC to the ham-verted BC-454.
Works excellent and plenty of audio.
Here's a photo of it just "tacked" onto the back deck
of the receiver on my cluttered work bench:

http://home.netcom.com/~arc5/dcdcpwr.jpg

The receiver works entirely on 12 VDC.
Even powered it from a Gel Cell for awhile.
Since there is no filtering, there are birdies at 
each harmonic of the switching freq- about 160 KC.
None of them have been a problem so far and a pot
on the "trim" input would likely move any birdie if it
was an issue.

73 DE Dave AB5S



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