This low frequency circuit was found in documentation from the 1980s. The values of R and C determine the frequency. Inverters can also be designed with logic gates.
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...