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Subject: half-wave series voltage multiplier: strange behaviour

Date: 06/05/01 at 3:05 PM
Posted by: Tiemen van Dillen
E-mail: tiemenv@yahoo.com
Message Posted:

I am experimenting with a simple half-wave series power multiplier.

my circuit: one stage (2 diodes & 2 capacitors) & two stages (4 diodes & 4 capacitors) of a voltage multiplier. my input is a 0-680 volt wave from a 12 vdc generator (60Hz? - not sure). I am using diodes and capacitors that are probably underrated... parts that I had lying around. no knowledge on the diodes, the capcitors are rated for 400 V, .15 microF

Problem: theoretically, I should get a 680 VDC or a 1360 VDC potential. I do get this, but as soon as I measure it, the meter draws down the potential, which could be expected. the strange behavior that I am not understanding is that the potential is not recharged when the meter is disconnected. it is only recharged after the generator is fully disconnected and then reconnected. even stranger is that if the generator is not fully disconnected, and then reconnected, I get some intermediate potential (like 500 Vdc)

Can anyone offer some advice / explanation? I have tested and retested the components, and I did not burn them out as far as I can tell.

thanks...


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