Joule Thief

[dasimpson]

now would you be able to use the caps in parallel for more ampage ?

[Pirate88179]

How many amps do you need?  Just my one boost-cap is rated at 3,000 amps!  That is enough to melt a very heavy wire.  Boost caps can be placed in series or parallel for unlimited numbers.  Regular supercaps usually are not to have more than 3.  I have no idea what happens if you go higher than that but, all of the things I have read says that.

Bill

PS  If you use the 3,000 amps a single boost cap will not last long without recharging.  I didn't want to give the impression that one will put out 3,000 amps all day...it will not.  Google Maxwell boostcaps to see what they are about.

[dasimpson]

no what i ment was is after the joule thief for storing the high voltage i just wonted to know if it would stor the ampage there also 3,000 amps if like a battery i would guess would depend on the draw to how long it would last

[dasimpson]

one thing i must note put the load on befor starting the joule thief i have blown a good few leds lol my joule thief is at about 110 to 120volts at the cap after the bridge rectifre but it will also limit to what ever the load voltage is

i mean i put an led on the cap it mesured 2.7 volts i put 3 on it mesured 7.4 volts strange dont you think

[Pirate88179]

Yes, exactly right as I understand it.  Higher amp draw means you may need several b-caps in parallel.  I just saw in another topic a fellow posted that Maxwell is selling their 3,000 Farad B-caps for like $90.00!!!  That sounds like an incredible deal.  That is almost 5 times the capacitance of mine.

Yes, you can dump a JT's output into a supercap.  I don't rectify it as I was thinking that wastes some energy.  Most JT circuits appear to output pulsed dc and not a true ac anyway.  The big caps capture those spikes and make them usable.

Bill