This circuit is based on a Siemens S566B integrated circuit. The circuit is from a Radio Electronics Experimenter and also has a digital control input.
This speed control for motors up to 500 mA was obtained in an old European documentation, but it...
This simple amplified relay circuit works on RF signals. The power supply is according to the...
This circuit is from the 1982 SGS linear integrated circuit manual. The LS776 is not common today,...