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Registered Member #7669
Joined: Mon Oct 29 2012, 02:55PM
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Posts: 19
Hi
Noob question, I hope somebody can help,
I need to charge a capacitor to 60V, but I don't have a 60V DC power supply. I understand that a signal from an oscillator can be rectified into higher voltage DC.
If I use a bridge rectifier, is it as simple as putting the signal from the oscillator through it to get DC out the other side? How is the output DC voltage controlled? Can I get 60V from a low voltage signal from a function generator? Or will I need to use a transformer of some sort?
Registered Member #15
Joined: Thu Feb 02 2006, 01:11PM
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Posts: 3068
Depends what voltage the oscillator outputs. If its only 10V, then you'll only be able to charge the capacitor up to 10V (minus any diode drops from your rectifier).
However, there are numerous boost type circuits which can be employed to charge capacitors. Easiest bet is simply to search GOOGLE for capacitor charge circuits / ICs. There are tons of ICs available that can be used for capacitor charge applications.
For example, there are single ICs solutions that can utilize the 1.5V from an AA battery to charge up a 400VDC photoflash capacitor.
Registered Member #7669
Joined: Mon Oct 29 2012, 02:55PM
Location:
Posts: 19
Ah I see, I had no idea there was such a thing as a capacitor charger IC! Is this the sort of thing you mean? It looks like they have some accompanying circuitry on the datasheet, transformer, resistors, capacitors etc. I shall have to investigate further
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Charging capacitor with oscillator?
