Hi all
I made a voltage tripler following this schema:
http://www.electronics-tutorials.ws/diode/diode52.gif
I used foil capacitors without fixed polarity and I didn't add an earth since I placed it in a hard plastic box.
I tried it and apparently it is working. Since I could not check the voltage at the maximum output I used it for few seconds then I discharged it and I checked with the tester the single capacitors, here I found something strange.
1) The capacitors do not discharge fully even if I drain all the remaining voltage from the output contacts.
2) C3 retains more charge than the others, more than 150 volts
3) C1 and C2 retain a small charge, but the opposite polarity of what I expected.
Actually I made many test and sometimes I measured the correct polarity in C1, but C2 is regularly reversed.
I checked the diodes and they seem to be working properly even though sometimes when I check D3 I can see a small resistance for a few seconds in the direction where there should be none.
What could be wrong with the circuit? Is it possible it is just a glitch caused by the current bouncing back when I disconnect it (although the diodes should prevent it)?
I made a voltage tripler following this schema:
http://www.electronics-tutorials.ws/diode/diode52.gif
I used foil capacitors without fixed polarity and I didn't add an earth since I placed it in a hard plastic box.
I tried it and apparently it is working. Since I could not check the voltage at the maximum output I used it for few seconds then I discharged it and I checked with the tester the single capacitors, here I found something strange.
1) The capacitors do not discharge fully even if I drain all the remaining voltage from the output contacts.
2) C3 retains more charge than the others, more than 150 volts
3) C1 and C2 retain a small charge, but the opposite polarity of what I expected.
Actually I made many test and sometimes I measured the correct polarity in C1, but C2 is regularly reversed.
I checked the diodes and they seem to be working properly even though sometimes when I check D3 I can see a small resistance for a few seconds in the direction where there should be none.
What could be wrong with the circuit? Is it possible it is just a glitch caused by the current bouncing back when I disconnect it (although the diodes should prevent it)?
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