This circuit can be used as a shield for touch control. The circuit can use any common FET like the BF245 and should never be powered by a source without a transformer.
Found in a 70’s documentation, this circuit can operate with signals up to 10 MHz. The operational...
This circuit is from a 1989 Electronics Handbook. The zener diodes are 9 V x 1 W and the...
Using components from the 70s, this circuit can be implemented with modern equivalent components....