The supply of this circuit can be done with voltages from 8 to 28 V and the maximum output current is 3 A. The gain is 36 dB. The speaker impedance is 4 ohms.
This 1995 circuit uses interruption sensors or NC connected in series in any quantity. With the...
This circuit, suggested by a 1975 documentation, detects an electrical discharge in a storm by...
Found in an old Electronic Design, this circuit provides an output voltage that is the absolute...