Gents,
a dumb Q, but this is always a good place to ask both Dumb Q's and smart ones!
I'm building a programmable load to test a DC-DC power supply I'm building. The control circuitry needs to be isolated, so that it can float with the negative rail of the power supply under test. I initially thought using a 9V battery would be safest, but I'm now wondering if I can use an off the shelf 9VDC power supply.
Maybe I've misunderstood, but most of the AC/DC switching supplies all have isolated outputs?
What throws me is there's often a Y-class capacitor that bridges the primary and secondary. doesn't that defeat the isolation?
Cheers
R
a dumb Q, but this is always a good place to ask both Dumb Q's and smart ones!
I'm building a programmable load to test a DC-DC power supply I'm building. The control circuitry needs to be isolated, so that it can float with the negative rail of the power supply under test. I initially thought using a 9V battery would be safest, but I'm now wondering if I can use an off the shelf 9VDC power supply.
Maybe I've misunderstood, but most of the AC/DC switching supplies all have isolated outputs?
What throws me is there's often a Y-class capacitor that bridges the primary and secondary. doesn't that defeat the isolation?
Cheers
R