Found in a 1968 EEE, this circuit accepts frequencies from 1 to 1000 Hz and control voltages from 0.1 to 15 V. The operational amplifier is from the era and can be replaced by modern equivalents.
This small blocking oscillator for approximately 1000 Hz was found in an American documentation from the...
This isolated solid state relay can function as a shield directly controlling 10 A loads. The...
This circuit was found in a 1974 publication. It converts the applied voltage into pulses of...