This converter converts a signal in the 200 kHz to 3.8 MHz band into frequency signals that can be tuned on a 3.5 MHz receiver. Coil data not provided.
Figure bellow shows how the 4088 or 4018 can be used as a touch switch. Two metal plates separated by 1 mm...
This touch switch is from a 1978 publication. The circuit should not be powered by a...
This circuit prevents damage by accidentally reversing the power supply polarity. The circuit is...