This circuit was obtained from the PE Hobbyist Electronics publication of 1980. The circuit is based on the 555 and is simple to assemble and can be used to control the brake lights.
With the values of the components indicated, the circuit generates a 1 kHz signal. The power...
This circuit for measuring very low currents was found in an American documentation from the...
This circuit for the two-meter band of radio amateurs was found in 1980s documentation....