Joule Thief

Freezer · February 03, 2009, 06:29:26 PM

Quote from: gadgetmall on February 03, 2009, 05:56:55 PM
I want to get a toroid to do what that transformer Does and do it with a JT .

That's what I've been looking at as well.

I'm not there yet, but heading towards it.

gadgetmall · February 03, 2009, 06:42:21 PM

@Freezer . May i ask what program do you use to draw with ? And i dont see how that circuit works with a cap in series with a winding .

keep us posted . Nice ~ ***EDIT*** O good you fixed it

@ aLL . if anyone is interested , the fugi i lit this morning at 8 am with the 45 watt CFL is still on but i see little spirals effects going on so i expect this one will last another hour .. its been on for 11 hours !! one more . looks like the average for both is 12 hours of CFL light with plenty to spare for LEds i bet .. will measure when it un-lights .the other stopped at 1.16 volts and lasted 12.5 hours with a 15 watt cfl . it was still oscillating and producing energy thought could have lasted maybe another 8 hours on leds ..100+ i think .. EDIT .. ok # 2 FUGI CLF DIED 11 hours 11 minutes voltage is 1.13 and i can adjust it to still light but it draws more current than the initial lowest current drawing setting. i have more than enuff power left because it still is putting out Voltage . .. Next Im having fun are U ?....

TBC

jeanna · February 03, 2009, 07:00:22 PM

Quote from: gadgetmall on February 03, 2009, 04:55:25 PM
haha we posted at the same time look up ! I Edited the answer .. Also i tried different capacitors . Some "short it or stop it some don't . and a Cap across the battery in this circuit draws more current . Just an observation with the caps i have here .

I know this is from pages ago, but this is what I was finding last night too.

The cap across the battery drew more current.

thank you,

jeanna

gadgetmall · February 03, 2009, 07:05:02 PM

Quote from: jeanna on February 03, 2009, 07:00:22 PM
I know this is from pages ago, but this is what I was finding last night too.

The cap across the battery drew more current.

thank you,

jeanna

Hi Jeanna . Not on My Jts .they got brighter and less current draw with cap +battery.. they are 2200uf at 10volts Low ESR ,, on the Jts with secondary or without like a normal jt . The size of Uf matters .and the Voltage cap i use is never more than 16 v caps .
They(caps across the battery) didn't work on the FUGI thats what i meant .

jeanna · February 03, 2009, 07:06:44 PM

Quote from: xee2 on February 03, 2009, 05:12:52 PM
and therefoe told you that it was a bad idea. However, it turned out that it was the LED that was bad. When I tried a new LED it lit up very bright. So the circuit was working but not my brain.

OK good. HA forgiven. I had already tucked in when you sent that!

(Maybe I will catch up to this thread by nightfall. It is already 4PM)

Thanks,

jeanna