Found in an American publication from 1968, this circuit generates pulses at a rate of 2,500 per second. The transistor can be replaced by a modern equivalent.
November 2016 - The TL3780 ultra-miniature E-switch touch switches can now be obtained from Mouser...
With this circuit, power cables can be detected by simply approaching PP. PP is an antenna or...
This amplifier configuration for instrumentation with two operators was found in a circuit manual...