This circuit was found in documentation from the 1980s. The circuit uses several components of the time, which are uncommon today. We must not supply it with a transformerless power supply.
An excellent 7-channel sequential system was obtained in a 1981 documentation, which is shown in...
This circuit came out in a publication called Electronics Handbook of 1993. The circuit triggers an...
The oscillator shown generates a signal in the 4.5 MHz band and can be used for audio modulation of TV...