Ted,
You might want to consider this kit:
I built one and use it with an old computer power supply and it provides clean stable DC output.?
I even put it in a black plastic box so it was ¡°pretty¡±.?
The computer power supply I used had a ferrite bead on the leads but if yours doesn¡¯t you might want to add one.?
73,
Alan, W3AL
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On Sep 9, 2018, at 14:42,
qrp@... wrote:
That is interesting as I was about to build a dedicated variable PSU for the QCX I am building using an old Dell laptop 19v SM PSU.
I was going to use one of those cheap DC - DC converters with an LED segment display to get the voltage down the range required.
I think i'll get the scope out and have a look at the noise on the Dell PSU rails before I start.
Thanks & 73s
Ted
