[Milsurplus] power supply question

[Kenneth G. Gordon]

On 23 Jul 2022 at 11:38, mstangelo at comcast.net wrote:

> 
> if the input rectifiers and filters the input to produce a DC voltage for the chopper 
> circuit it may work.
> 
> The modern input rectifiers should work at 400 or 800 Hz. Any input RFI filtering 
> may be an issue. Do you have a smps to test with?
> 
> Mike N2MS

Grab any old computer powersupply. They are a dime-a-dozen and all are SMPS. I grab 
them and convert them to output 13.8 VDC at whatever 12V current they are rated for.

The one I use for my VHF gear will output 13.8 VDC at 25 amps without so much as wincing.

I bought over a dozen brand new computer power supplies for $12.00 each which when 
modified slightly output 13.8 VDC at 45 amps. They also have over-voltage and over-current 
protection built-in. They were originally made to be used in Dell computers and the 
computer-store which had them not only no longer needed them, but they had been sitting in 
their storage for several years. They were glad to get rid of them.

I am very curious if any would work at 400 or 800 Hz.

Ken W7EKB