This circuit protects an operational amplifier with respect to both current and voltage. The circuit is from American documentation and can be applied to almost any operational.
Found in Electronics Today International in the 90s, this circuit turns an operational on and off...
At dusk this circuit triggers a relay switching lamps. The circuit can be powered from 6 to 12 V...
This second-order low-pass Salen-Key filter was obtained from an American 1980s documentation. Formulas...