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Solar recharging LED system PUBLICCircuit to support solar powered house number system by Mark_Cohen | updated May 21, 2012 |
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Voltage-controlled timer PUBLICApply a frequency control voltage (labeled "fan power") to a 555 timer. Designed to emulate a the output of a DC controlled fan with a rotation encoder. by Mark_Cohen | updated May 18, 2012 |