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Overunity Machines Forum



Charge Battery From Capasitor.

Started by slayer007, March 12, 2008, 04:07:50 PM

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slayer007

How would I go about charging a 12v battery from a compasitor?
The capasitor has about 150v .
I would think I would need to place a resistor in between the capasitor and battery so it trickled in but I have know idea of the resister size.
If anyone could please help or has a better idea please let me know.
Thank You.

Groundloop

@slayer007,

Attached is a drawing that explains an easy and smart way of doing what you want.
With this circuit you can charge up a battery from a pulsed oscillator etc.

[EDIT] I have updated the drawing.

Groundloop.

slayer007

Great Thanks for the quick reply.
Sounds good I'll give it a try thanks agine.

Groundloop

@slayer007,

Some more information about this circuit. You need to use a SCR with a low trigger current threshold because the current through a Neon bulb is very small. The TIC106D is perfect for this job. Another issue is the maximum current the SCR can handle. If you capacitor is to big then you can exceed that current threshold. Read the data sheet for the SRC you select to use. The TIC106D can handle 400V and maximum 5 Amp.

You will be safe if you use a capacitor of 100 - 200 uF. Also never run the circuit without a load (battery etc.) on the output. The capacitor will just charge up to a high voltage maybe exceeding the voltage rating of the capacitor. The result may be a exploded capacitor. If you want a higher voltage then increase the value of the resistor. The attached image is a typical neon bulb(5,5?20mm). Uses approx. 0,3 mA. 56K will give you 110 Volt over the capacitor.  100K will give you 220 Volt. Select a capacitor with the voltage rating that suits your needs. One more issue, if your input is capable of supporting a high current at high voltage then this circuit will not work. This is due to the fact that the SCR will never stop conducting current. If the neon bulb does not blink (is glowing steady) then use a resistor in series with the input plus rail.

Groundloop.

slayer007

Groundloop
On the diagram I'm not really sure how to read the pin layout of the src.
I see they look like a transistor with 3 pins.
But I'm not sure how the diagram would go with pin 1,2 and3.
Thanks for all your help.But I need a little more info of the pin layout and the diagram.