This transformerless 16-ohm speaker circuit was found in a Radio Electronics from October 1963. The circuit is powered by 12 V and the gain is 50 dB.
This circuit converts logic signals into a sinusoidal output. The components must be adapted to...
The range of generated signals depends on coil L1. The circuit was found in old English...
The sensor diode used in this circuit is the common type of germanium. Experiments may be made...