This ultra-simple circuit need a carbon microphone to operate. The circuit must be powered from D cells and the transistor must be mount on a small heatsink. The 12 ohm resistor may be changed to reach the best performance.
This ultra-simple circuit need a carbon microphone to operate. The circuit must be powered from D cells and the transistor must be mount on a small heatsink. The 12 ohm resistor may be changed to reach the best performance.
