Joule Thief

[dllabarre]

Since I created my JT on 8/1 its been on.
I used the same AA battery and never turned it off.
The battery has gone from 1.168 volts down to .277 volts.
The LED was lit right up until .279 volts at 7:39AM this morning.
Once the battery hit .2788 the LED went out.

I'm curious how low of a voltage has others gotten before the LED went out?

DonL

[resonanceman]

Rave

I  have been thinking of  building  your  version of  the  555  circuit

I have a question about the  green line .
Is  it  just another  wire ?
IDoes this  circuit require reset to be connected with B+ ?


This circuit is  a little more complex than some of the others  but I like the mark/space   adjustemnt
It seems to me  that is important  if you want to get the highest  efficiency .... just adjust  for the narrowest  pulses that  will  get the job  done .

gary

[xee2]

@ dllabarre

Since I created my JT on 8/1 its been on.
I used the same AA battery and never turned it off.
The battery has gone from 1.168 volts down to .277 volts.
The LED was lit right up until .279 volts at 7:39AM this morning.
Once the battery hit .2788 the LED went out.

I'm curious how low of a voltage has others gotten before the LED went out?

DonL

That is a very low voltage for a silicon transistor. Can you post a circuit diagram?

Using germanium transistor I was able to get JT circuit to work down to 0.140 volts (see my post a few pages back). The following circuit should run for one month on an AA battery but I have not tested this. The 0.047 capacitor is not needed and the germanium transistor can be replaced with a silicon transistor as noted. If a 20 F capacitor is used instead of the 0.047 F capacitor, the circuit should run over an hour after the battery is removed. The circuit needs an efficient LED, both kinds I have work but not all LEDs will work in this circuit.

[FreeEnergyInfo]

Rave

I  have been thinking of  building  your  version of  the  555  circuit

I have a question about the  green line .
Is  it  just another  wire ?
IDoes this  circuit require reset to be connected with B+ ?


This circuit is  a little more complex than some of the others  but I like the mark/space   adjustemnt
It seems to me  that is important  if you want to get the highest  efficiency .... just adjust  for the narrowest  pulses that  will  get the job  done .

gary
[/quote

4+8= input + batery

[the_big_m_in_ok]

@ freeenergyinfo
What Tesla patents are those images from?
DonL

This was on the 'Web, with respect to Reply #9111, this thread page, 2nd from top:

http://www.hbci.com/~wenonah/new/tesla.htm

These are only the issued patent numbers.  Drawings to these patents would need to be seen individually.

--Lee