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Author Topic: How do you make a capacitor bank to amp the voltage of a solar panel up to 5v?  (Read 665 times)
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mohammad45
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« on: July 12, 2013, 01:16:56 am »
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Hi I wish to make a circuit that uses a power source of 1v to be raised up to 5v by a bunch of capacitors.
Any tutorials or tips?
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AWOL
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I don't think you connected the grounds, Dave.
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« Reply #1 on: July 12, 2013, 01:34:46 am »
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Google "boost converter"
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fungus
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« Reply #2 on: July 12, 2013, 01:47:02 am »
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Quote from: mohammad45 on July 12, 2013, 01:16:56 am
Hi I wish to make a circuit that uses a power source of 1v to be raised up to 5v by a bunch of capacitors.
Any tutorials or tips?

You'll need more than just capacitors...

Go to ebay and search for "5V boost".
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AmbiLobe
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« Reply #3 on: July 12, 2013, 05:39:02 am »
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Tip:
http://www.freepatentsonline.com/6538930-0-large.jpg

Diodes , capacitors and 2-phase clock : simple to understand. Easy to make.
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fungus
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« Reply #4 on: July 12, 2013, 05:55:38 am »
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PS: The phrase "amp up the volts" is just plain wrong...
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tocpcs
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« Reply #5 on: July 13, 2013, 07:14:34 am »
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There's a relationship that exists between current and voltage.
I'd suggest you first check that what you want to do is technically feasible with the equipment.
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MarkT
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« Reply #6 on: July 14, 2013, 08:37:27 am »
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flying capacitor DC-DC converters are very inefficient for anything but small currents I believe - what current
is the load requiring?

A standard boost converter would prob. be a better answer apart from the bootstrapping issue - with only
1V at the source how to power up (most boost converters need more than that to operate).

You also have to worry about brown-outs when there isn't enough light to power the converter - will
it behave gracefully?

And when you say 1V to me that says 2 PV cells in series (they give about 0.5V under load) - is that the case?
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