This two-transistor amplifier can be used as power stage for intercom, experimental receivers, signal tracers and other applications. The circuit uses common low power transistor, but the output stage can use power transistors as the TIP31/32 or BD135/136. Powering the circuit from a 9 or 12 V supply you can get some watts of sound for a loudspeaker. In the simulation we use a 200 mV sine signal applied to the input. Output can be loudspeakers from 3 to 16 ohm.
To download the simulation files and Netlist - click here (msb0035.zip)