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Registered Member #1451
Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
It all depends on how they are then connected to the rest of the circuit. Plenty of voltage multipliers have been made with electrolytics of your size. The caps will be fine as long as the voltage across the individual caps is the correct polarity. A schematic would also be helpful.
Registered Member #162
Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141
Most voltage doublers can use electrolytics singly, IF you need non-polarised consider 'lighting capacitors' available from a few uF to 10's of uF quite cheaply (eBay) they are film capacitors designed to be operated across the mains and are very reliable.
Registered Member #1498
Joined: Thu May 22 2008, 07:08AM
Location: Hong Kong
Posts: 72
Capacitors in voltage doubler can be polarised?I am afraid that it will explode. I can't buy anything on Ebay because I don't have a credit card.I just want to know whether my method will work.
Registered Member #1451
Joined: Wed Apr 23 2008, 03:48AM
Location: Boulder, Co
Posts: 661
Non-polarized means that it can have a voltage of either polarity on it; there aren't any negative or positive leads. You mighty want to do some more research on this if you're building this to charge a coilgun bank... that can be some serious voltage and it gets hugely dangerous if you don't completely know what you're doing.
Registered Member #72
Joined: Thu Feb 09 2006, 08:29AM
Location: UK St. Albans
Posts: 1659
Capacitors in voltage doubler can be non-polarised?I am afraid that it will explode
Depending on your configuration, the first capacitor must be non-polarised, the rest can be polarised.
It may help to get a circuit simulator (suggestions on the wiki, I prefer simmetrix), and look at the voltages on the various capacitors versus time. Simulator is less likely to explode than real life.
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
It should work just fine to use 2 capacitors 'back to back', however you should add a reverse diode on each capacitor to prevent them from being reverse charged.
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Capacitor in voltage multiplier
