This circuit with a 4046 PLL was found in the December 1989 issue of Radio Electronics magazine. The circuit produces the clicks of a roulette wheel at decreasing speed.
This circuit consists of an audio signal tracer using two 741 operational amplifiers. The output...
This circuit was obtained from a 1964 magazine and has some interesting features such as the input...
This circuit uses a contactor having been found in a 1987 publication. More modern equivalent...