This time base circuit for the oscilloscope was obtained from an Electronics Now from the 90s. The circuit is intended to control the cathode ray tube of old oscilloscopes.
This light effect circuit was found in the July 1971 Radio Electronics magazine. The circuit is...
This is the traditional configuration of an AND gate using an operational amplifier. Operational...
This is the receiver for the previous circuit, also found in 90s Radio Electronics. The circuit...