This trimmer or reaper amplifier cuts the signal peaks at a voltage determined by the zener diodes. The gain is given by R1 and R1 and the power supply must be symmetrical from 5 to 15 V.
Using a Motorola MC1684 integrated circuit this 1968 amplifier provides 1 W to a 8 ohm load. The...
Equivalent operational amplifiers can be used in this circuit suggested by Motorola in its 1990...
Found in an English publication from 1977 this audio amplifier provides an output of a few...