Hello LF'ers, I have had a few issues with my lovely old Farnell H60/50 linear bench power supply. It'll do 60V @ 50A but I suspect it's last couple of uncontrolled output voltage failures may have b
Hi Chris, Did you Try capacitors across the supply lines right at the output connectors and also from both + and - to earth? Did you try the same at the mains input with suitable voltage rating? Rega
Hi Chris, Yes, maybe try a homemade filter. I would try something like in the attachment... Build yourselfe a current transformer and measure RF common mode currents in the supply line of the power s
Hello Lawrence, Sorry for late reply, work and a dodgy e-mail service from something gone wrong at my ISP. I haven't as yet tried any caps on the LV output terminals, would 1uF ceramics be appropriat
Hello Stefan, Thanks for the reply, with regard to the current transformer, where does the 1 Ohm resistot go?? In your drawing of the chokes can I assume the six turns each you drew is accurate and y
Hi Chris, Hm, there is no 1 Ohm resistor in my drawing. Regarding the number of turns, if you run 50A DC, you will have at least 6 mm^2 wire i assume. So you can't wind 2x 6 turns through this core.
