This circuit is the factory version of the LM386 low-power amplifier. The sound quality is excellent, and the power can be supplied with voltages from 6 to 16 V.
This circuit can be used in alarms by activating a relay or a current load that depends on the...
This circuit is from the 1968 ARLL documentation. The MOSFET admits equivalent and the coil...
Figure bellow shows how one of the two separated counters found inside the 4518 is used as a...