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Registered Member #1694
Joined: Sat Sept 13 2008, 09:13AM
Location: Australia
Posts: 108
Hey all,
My caps have a working voltage of 400v. I am charging them with an inverter which puts out 230v AC then a voltage doubler. My voltage doubler puts out 560v DC when I measure it with my multimeter. My question is . . . HOW is that even possible?? And how can I restrict the output to 400v preferably without affecting the charge time? The person who says disconnect when the caps reach 400v gets a kick in the bum.
Registered Member #1633
Joined: Tue Aug 12 2008, 04:21AM
Location:
Posts: 45
Use a feedback system which stops the charging when it reaches 400. use a voltage divider to output around .6 volts to a 2n3904 and a small ceramic capacitor attached to ground, then use the 3904 to shut of power to the inverter. you could power a small relay with the 3904 which would disconnect power from the inverter
Registered Member #1694
Joined: Sat Sept 13 2008, 09:13AM
Location: Australia
Posts: 108
Thanks mate.
I just charged my cap bank completely for the first time. It takes ages to reach 300v, and ages more to reach 350v. I think ill use your idea to turn on an LED once it reaches 350v. It would take years to go from 350 to past 400v.
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Voltage doubler
