This Linear Technology circuit charges a battery from the energy produced by a wind generator that can be a 12 V dynamo driven by a propeller. FET admits equivalent.
This touch switch is from a 1978 publication. The circuit should not be powered by a...
The circuit shown uses the 741 operational amplifier, but lower noise and higher gain equivalents...
We found this zener regulator in a 1978 radio amateur documentation. The operational can be...