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 of a Popular Electronics from the 90s makes use of components of the time. The...
This circuit is from 2001 documentation but can be adapted to the outlets with the current...
This circuit for a commercial compact digital multimeter was found in the March 1979 issue of...