This circuit was proposed by a 1965 Electronic Design. Its purpose is to widen the line transients to make them easier to see on common oscilloscopes.
This VCO makes use of components from the 1980s. The circuit can be implemented with modern...
This circuit uses an LDR as a sensor to trigger an LED indicator at a preset lighting level. The...
This circuit was found in a 1968 General Electric documentation. It has an input impedance of 2 M ohms...