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 transistor source was found in a 1990 documentation. 2N3055 transistors must be equipped with...
This tube circuit is from an 80's documentation. The filter is of the selective type and the...
This general-purpose two-transistor circuit was found in the November 1993 issue of Electronics Now. The...