This 1 kHz oscillator uses a Norton LM3900 operating system. The frequency depends on C1 and R1 and can be changed.
This two-input limit detector was found in an American 1980s documentation. The circuit can be...
This is the basic full-scale circuit of an LM3914 for voltage measurement or voltage triggering and...
This circuit may be of interest to restorers of old video equipment. We found it in the Radio...