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 circuit uses one of the 6 CMOS inverters of a 4060 as a touch on / off switch. The power...
This aperiodic circuit was found in an old English documentation. The transistor can be any JFET...
This circuit can function as both a light alarm and a shadow alarm. The components are common. The...