[sdiy] DC-DC Converters

[Shokwave]

----- Original Message ----- 
From: <WeAreAs1 at aol.com>

> Indeed, there is no reason to dismiss them out of hand.  Many of our
favorite
> music-making machines have switching power supplies, and you'd be very
> hard-pressed to ever hear that the power supply is causing audible
artifacts, or
> tuning/stability problems with VCO's.

Indeed, I've been wondering about this. As a new ham radio operator, I
recently purchased an all-band, all-mode rig and needed a PS for it. Imagine
my surprise when I noticed that many, many companies sold switching supplies
for use with HF/VHF/UHF radios! I was floored; the SDIY motto has always
been "linear please". Anyway, a couple of local EE/ham types told me to get
a linear, as they were quieter, but obviously many people feel that their
extremely sensitive radio VCO's work great from switching supplies. They ARE
more efficient, and tend to be much smaller/lighter.

My SDIY prejudices made me buy a linear PS in the end, of course.

-Darren