Quote:
Originally Posted by G3VKM_Roger
"They seem to have improved those little yellow
High-Voltage DC-DC converters, sourcing enough power to make
them more useful. You can find'em on Ebay and Amazon
for 8 or 10 bucks, like this one:
https://www.ebay.com/itm/183717171988
They spec them for 20 Watts continuous. Recently
got a couple and decided to try one on a newly-
revived TCS receiver. Set the output for 190V.
At that B+ the TCS draws about 70 mills at full
volume, about 13 Watts. Ran it for
a couple of hours and the FET never got beyond
comfortably warm to a fingertip and the
heatsink remained cool."
I see they do bigger modules up to 450V too. |
No doubt they will supply the volts and the power. They will also supply vast amount of RFI, which will make them unusable as-is within any receiver. A serious amount of engineering will be required to get the interference down to a level where the receiver actually receives anything - other than crud out of the psu.
By "serious engineering" I am thinking of a double set of screening boxes, with every lead in/out being heavily filtered - such as you get in many professional signal generators. The connection between the two boxes will need to be carefully thought about too, to ensure there aren't heavy circulating currents in the boxes themselves.
Richard