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Does the tranny have two primary windings for its push-pull operation? Have you modified the primary side?ATX power supplies use a push-pull system to drive the transformer symmetrically - hence my confusion as to why this one isn't symmetrical.
Does the tranny have two primary windings for its push-pull operation? Have you modified the primary side?
Just thought I'd ask, but this seems to be a lot of effort for a relatively available part....lots of 36VDC 10A switching supplies on Ebay....for abt $32 incl shipping.
A 36V supply can charge your 24V batts with proper CC/CV regulation.
They have a +/_ 10% adj pot, so u can go down to abt 32V
Hate to admit this, but I've just tried a matched pair of (separate) 300uH inductors and it seems a lot happier up to 4 amps: but I can't check the waveforms when I'm burning my finders with load resistors - other than thinking they looked OK for the second or two I could see them - I need to set up a suitable variable load to test more fully (big transistor on a big heatsink)....
OK - with the separate inductors it seems to be stable and quiet right up to 10amps.
At low powers there's still an asymmetry in the pulses but it seems to disappear at higher currents (or at least diminish to the point where I can't see it on my dodgy scope).
Question is: should I worry about it if the PSU is otherwise working OK?