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Overunity Machines Forum



Joule Thief

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

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Pirate88179

#14710
January 20, 2011, 07:29:48 PM
Quote from: MrMag on January 20, 2011, 03:16:58 PM
im sorry you feel the need to rip off others work and call it your own ...

that is so sad it proves how foolish you are ..

see revenge is a meal best eaten COLD

(I was hoping you wouldn't be back to your old self so soon)

Osiris has been placed on read only....again.

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

the_big_m_in_ok

#14711
January 20, 2011, 09:39:53 PM
Quote from: freepow on January 20, 2011, 06:00:01 AM
@ All

I am making a Solar Panel...  3 volts @ 7.2 Amps, and I will be charging a supercap with it and as soon as it is charged up, then I'll switch the solar charger off,  Do I need a Diode ????

I bought   2x Diodes rated at  6 Amps each , will these work ????
Do I hook then up in parallel ????

How much voltage drop will there be from the  3 volt Solar panel with the 2x Diodes ????

Or if I change the Solar panel to 2.5v output, can I quickly charge cap and soon as cap reaches 2.5v then switch Solar charger off, will I need a Diode ????
A diode will prevent voltage leak-off to ground during darkness or when the charger is off, so, "Yes", a diode is a good idea.  If the two diodes are in series, they'll be okay except for possible transient spikes.  Three might be better against those spikes.
Was that what you were driving at?  Better yet, can you post a diagram, at least in keyboard ascii, of what you're doing?

--Lee
"Truth comes from wisdom and wisdom comes from experience."
--Valdemar Valerian from the Matrix book series

I'm merely a theoretical electronics engineer/technician for now, since I have no extra money for experimentation, but I was a professional electronics/computer technician in the past.
As a result, I have a lot of ideas, but no hard test results to back them up---for now.  That could change if I get a job locally in the Bay Area of California.

freepow

#14712
January 21, 2011, 01:43:26 AM
Hello, I have a diagram of the panel I have nearly finished,
It consists of 2 rows of 5 cells each, each cell suppose to be 0.5v @ 3.6 Amps, however I am getting 2.7-2.8v
@ 8-9 Amps,  better than I expected !

Should I have a one way Diode from the solar panel to the SuperCap ????

I do have 2x Diodes rated at 6 Amps each, strangely these Diodes only seems to drop the voltage by about
.15v each, how should I wire them ????

crowclaw

#14713
January 21, 2011, 04:49:09 AM
Quote from: freepow on January 21, 2011, 01:43:26 AM
Hello, I have a diagram of the panel I have nearly finished,
It consists of 2 rows of 5 cells each, each cell suppose to be 0.5v @ 3.6 Amps, however I am getting 2.7-2.8v
@ 8-9 Amps,  better than I expected !

Should I have a one way Diode from the solar panel to the SuperCap ????

I do have 2x Diodes rated at 6 Amps each, strangely these Diodes only seems to drop the voltage by about
.15v each, how should I wire them ????
Hi freepow, did you read my reply 14739? a few posts back. Your diodes will be schottky types so place them in parallel. I would prefer to use a transient suppressor or a zener diode for spikes if you feel you have a problem. If you series connect the diodes then the forward drop of each is added together so three in series = 0.45volts. This drop will reduce your cap charge voltage.
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