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Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
If the capacitor has a suitably high voltage rating - about 350V for most photoflash chargers - then the voltage will rise to a maximum and then stay there. You can't 'overcharge' a capacitor, unless by that you mean apply more voltage to it than it is designed to withstand.
I would guess, though, that the tiny charging transformer and transistor wouldn't like it to be left on for too long at a stretch, as they aren't designed for continuous operation - but you must ask someone who has actually tried this.
Registered Member #1062
Joined: Tue Oct 16 2007, 02:01AM
Location:
Posts: 1529
With a standard power source, these do not get warm, they can operate for a while. You can use 3 volts input for short runs, to achieve a high voltage and faster charge rate.
Registered Member #1525
Joined: Mon Jun 09 2008, 12:16AM
Location: America
Posts: 294
All of the camera chargers that I've encountered automatically shut of at a certain value. For example, most of the ones I obtained have 330V caps, and the charger shuts off around ~315V. Increasing input power only decreases charge time.
Registered Member #1643
Joined: Mon Aug 18 2008, 06:10PM
Location:
Posts: 1039
I prob kill mine yet they still work. I got 7 in parallel, and i cut the board to 1X1cm. They can charge my 100J camera cap bank in maybe 15-30 seconds sadly, but I would expect that for such low power, as they aren't made for this. I think I had like 6 batteries in 3V parallel.
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Photoflash Charger
