Switching power supply

150

02:05:42

Using 120 vac rms to produce 10 vdc, and using a logic train as my modulator. Any ideas how to improve this so the current through the resistor doesn't fluctuate as much? Other than a capacitor in parallel with it, that seemed to make it worse.

published 9 years ago

hurz

9 years ago

Don't forget, digital logic sources refer to zero-volt-reference, cuz they are single pin!

justinmh

9 years ago

@hurz, I understand what you're saying, just not sure how to apply that to this.

hurz

9 years ago

2 options. Use an ac source. Or keep the logic source and add an extra zero volt reference at secondary side.

hurz

9 years ago

2. Option http://everycircuit.com/circuit/4933121275592704

justinmh

9 years ago

so on option two it looks like you're just connecting the ground to the - side of the bridge rectifier, and this causes the current through the resistor to stay around 40 milliamps, meaning it is only getting 4 volts, however it is very consistent, and even more consistent than it is here.

hurz

9 years ago

Sorry for the late response, check the last circuit again, maybe its now more clear.

justinmh

9 years ago

did you delete it? I can't get to it now

hurz

9 years ago

No, its still available

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