Re: need cap. charge indicator
- From: "Phil Allison" <philallison@xxxxxxxxxx>
- Date: Sun, 5 Mar 2006 13:23:41 +1100
"Jim"
I built a battery tab spot welder using multiple 5 volt 150,000 uf computer
grade capacitors in parallel, as the heart.
** Who makes 150,000 uF caps rated at only 5 volts ???
The capacitors are charged
using a small 5 volt unregulated charger.
** Bet it puts out a lot more than 5 volts when unloaded.
This works well, except I am not
sure when the capacitor bank is fully charged up, as it takes a long time.
** Should take only 4 seconds with a 1 amp charger.
What the heck are you using ?
What can I use as a charge indicator?
** So you do * not * have a DC voltmeter ?
All I really need is for an LED to
light or something like that. Can someone please suggest a circuit or an
idea that would work for this application?
** A red LED and a 3.3 volt zener would do - but you have more serious
problems than that.
.......... Phil
.
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