This circuit uses a 10F cap with a switching voltage regulator to increase the voltage from 2.3V to 9V. With a light load the cap will last up to 3 hours and once discharged it can be recharged in less than 20 seconds
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Tuesday, October 24, 2006
Build yourself a 9V battery - Lasts 2 hours - Recharges in 20 Seconds
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