Voltage doubler again

Still having trouble getting this sim to work - Trying to feed the bridge doubler with a square wave without a DC offset. Can anyone help?

Version 4 SHEET 1 880 680 WIRE 80 48 -208 48 WIRE 192 48 80 48 WIRE 416 48 256 48 WIRE 528 48 416 48 WIRE 528 112 528 48 WIRE 192 160 112 160 WIRE 416 160 416 48 WIRE 416 160 256 160 WIRE -208 208 -208 48 WIRE 112 240 112 160 WIRE 528 240 112 240 WIRE 528 240 528 176 WIRE 528 304 528 240 WIRE 80 336 80 48 WIRE 192 336 80 336 WIRE 416 336 256 336 WIRE -208 432 -208 288 WIRE 112 432 112 240 WIRE 112 432 -208 432 WIRE 192 432 112 432 WIRE 416 432 416 336 WIRE 416 432 256 432 WIRE 528 432 528 368 WIRE 528 432 416 432 WIRE 528 496 528 432 FLAG 528 496 0 SYMBOL voltage -208 192 R0 WINDOW 3 -437 80 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PULSE(5 -5 0 100n 100n 50uS 100uS) SYMBOL diode 192 64 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MURS120 SYMBOL diode 192 176 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D2 SYMATTR Value MURS120 SYMBOL diode 256 320 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D3 SYMATTR Value MURS120 SYMBOL diode 256 416 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName D4 SYMATTR Value MURS120 SYMBOL cap 512 112 R0 SYMATTR InstName C1 SYMATTR Value 2.2?F SYMBOL cap 512 304 R0 SYMATTR InstName C2 SYMATTR Value 2.2?F TEXT -426 240 Left 2 !.tran 1

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bitrex
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Do you realize that D2 and D4 don't do anything? They are directly across C1 and C2.

I find it easier to look at the circuit and the signals if the ground is moved to the negative terminal of the voltage source - that should't change its operation.

It seems to work as expected. I changed the capacitors to 2.2uF as they didn't seem to translate correctly.

kevin

Reply to
kevin93

I figured I likely had something connected incorrectly...I'm having issues wrapping my head around how to set up a bridge doubler made from discrete diodes.

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bitrex

Ok, nevermind, I think it's working properly now...

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bitrex

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