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Overunity Machines Forum



Joule Thief

Started by Pirate88179, November 20, 2008, 03:07:58 AM

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xee2

#9030
August 10, 2009, 11:21:46 AM
@ Pirate88179

Quote from: Pirate88179 on August 10, 2009, 10:35:41 AM
Are all transistors with that number germanium, or do you have to specifically look for germanium?

All 2N4077 transistors are germanium. I bought mine for 95 cents each. But the store does not do mail orders unless over $25. If you search web you will find several sources. Mine do not say who made them but they have a large F on them.

This circuit should run for over a day with your 600 F supercaps charged to 2.7 volts.

xee2

#9031
August 10, 2009, 12:40:49 PM
@all

Reducing base resistor value did not increase LED brightness. But it did allow circuit to run at an even lower voltage of 0.144 volts.

EDIT: Using 10 ohm base resistor also shortens time circuit will run on super cap. Increasing base resistor from 50 ohms to 500 ohms doubles time circuit runs using 3 volt battery.

Pirate88179

#9032
August 10, 2009, 01:03:00 PM
Xee2:

Thank you.

Bill
See the Joule thief Circuit Diagrams, etc. topic here:
http://www.overunity.com/index.php?topic=6942.0;topicseen

FreeEnergyInfo

#9033
August 10, 2009, 02:44:49 PM
Quote from: the_big_m_in_ok on August 09, 2009, 07:22:23 PM
@FreeEnergyInfo
Good posting with respect to Reply #9053.

Reminds me of my thread:
http://www.overunity.com/index.php?topic=7832.0

If you can find more, all the better.
ok
ok
ok


--Lee
the_big_m_in_ok

jeanna

#9034
August 10, 2009, 04:09:24 PM
Hi everybody,

Bill just invited me to post this pic here as well as the stub speculations page.
Thank you, Bill. I agree it is relevant in both places.

This is a drawing .. schematic of the Radiant joule thief and how not connected the 2 parts are.!!

jeanna
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