This circuit generates rectangular signals from 2 Hz to 20 kHz using an operational amplifier. The circuit is from 1984 Radio Electronics. The power supply must be symmetrical.
This circuit is from a 1957 Raytheon transistor manual. The diode can be of general-purpose...
The circuit shown in the figure shuts off a load when the voltage drops below the value determined...
This circuit was obtained from an English magazine from 1976. The signal from the circuit should be...