This touch switch is from a 1978 publication. The circuit should not be powered by a transformerless power source. It will be interesting to add a 470 ohm resistor in series with the LED. The power supply must be made by 5 V voltage source.
This touch switch is from a 1978 publication. The circuit should not be powered by a transformerless power source. It will be interesting to add a 470 ohm resistor in series with the LED. The power supply must be made by 5 V voltage source.
