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Hi

I am new to circuit labs, and i was trying to get a known DC voltage tripler circuit to work here.

What am I doing wrong?

https://www.electronics-tutorials.ws/blog/voltage-multiplier-circuit.html

thanks!!

Steve

You are almost there! Assuming, for example, that your transformer is converting 120VAC-RMS to 10VAC-RMS, the transformer parameters need N=12; thus, 12:1 Primary to Secondary ratio. I also changed your timing parameters in the Time-Domain Simulation. It makes it a little easier to check that the input AC peak voltages are what would be expected.

Your circuit with these two changes:

https://www.circuitlab.com/circuit/n8pn7jbr5v3z/drworry_tripler-rvsd/

Then I added capacitance and loads to the outputs. You will notice that without this, the outputs approximate SQRT(2) times 10, and times 30. The tripler is a half-wave circuit, so more smoothing and adding loads helps to see outcomes closer to the targets of 10, 20, and 30 VDC:

https://www.circuitlab.com/circuit/nj2t7ewhbept/triplerupdated/

Three graphs detail inputs to the tripler, output voltages and currents for 500 ohm loads.

John