This circuit trips when the current in a load exceeds the programmed value that depends on Rx. The circuit is from the Radio Electronics magazine of June 1986.
Found in a 1964 General Electric documentation, this circuit uses PUTs that are not currently...
This double tone generator uses a specific integrated circuit, having been found in a 1977 CMOS...
Found in American documentation from 1968, this circuit has an acute cut-off of the frequency to...