12 Jan
2002
12 Jan
'02
11:58 a.m.
On Jan 12, 20:14, jpero(a)sympatico.ca wrote:
Sounds like PSU is reacting to overloading or medium
shorts
downstream of that PSU outputs. Also can happen with dried
up capacitors (too high ESR).
I don't think it's any of those. The regulators all make a similar noise
when I put them on a dummy load drawing 5A, on the bench. And I'm sure
it's not bad caps, as two of them are ones I repaired recently.
Maybe I'm just sensitive to that frequency range :-(
--
Pete Peter Turnbull
Network Manager
University of York