This circuit was found in an Electronics World of 1968. The transistor can be any general purpose and the double T must be set to R3 for the desired effect.
This simple CMOS touch switch was obtained in a 1987 publication. All components are common and the...
This input stage has unit gain but a high input impedance and low output impedance. The circuit is...
Found in a 1964 Electronic Design, this circuit suppresses arcs that occur in contacts when a...