Joule Thief

[xee2]

@ Pirate88179

Thanks. Yes, that is a good price.

[Pirate88179]

X:

If you want larger sizes....scroll down on that page and you have a wide choice.  But, for the really big one, like the 650F cap, Gadgetmall has the best price on those I have seen on the net.  I started out with the smaller one (I salvaged from a shake flashlight, and didn't even know what a supercap was at that time) It was, I think, .47 F at 5.5 volts.  Those 10's are really fun to play with and I have made several videos showing what they can do.  But, they have 20's, 50's, 100's etc.

Bill

[xee2]

Pirate88179

LED stays lit with 100K resistor and blinks slower with 500K resistor. Since only time significant power is used is when LED blinks, then reducing blink rate should increase battery life (or super cap run time).

[nievesoliveras]

@all

Everybody is experimenting hard lately, That is very good for all of us.

@Electricme

I tried a 12 volt bulb in series with the collector connection and the transistor did not heat up as usual, But the high voltage from the secondary disappeared.
It does not give a single volt dc or ac out.

But at twelve volts input the circuit behaves as if it were 1.5 volts, no appreciable heat on the transistor.

So about the 12 volt bulb as a transistor heat quencher you are absolutely right.  The only problem is that it kills the pickup output.

Jesus

[innovation_station]

@ jesus ..  what if you wound a second one exactly like the first pickup coil left

all that is intact ... think you will pull ou put from the second coil ?

ist?