This circuit has a frequency range of 30 Hz to 100 kHz with an output signal of 1 Vrms. We found it in 70s American documentation. The integrated circuits are CA3140.
I found this circuit in a 1998 publication, but as all components are common, it can be easily...
Two sensors are used in this simple remote-control circuit, one to switch on and one to switch off the...
This circuit was found in GE documentation from the 90s. The circuit can be used as a shield for...