This circuit was found in a National Semiconductor manual from the 1980s. The operational amplifier is from that time and the waveforms are shown in the diagram.
This indicator makes use of an LM339 voltage comparator circuit that contains 4 internal...
This 3-channel sequential circuit, but which can be expanded further, uses triacs to drive...
This soft starter dimmer was found in a 1980s documentation. We can implement it with current...