We found this circuit in the 1983 Radio Electronics Special projects magazine. The components are common, and the circuit drives a relay. The power supply must be isolated.
We found this circuit in a circuit manual from the 1980s. The circuit eliminates the conductive...
This circuit generates interval signals controlled by a light sensor. The basic time of the sound...
This high-gain digital amplifier uses general-purpose transistors. The supply voltage is logic...