The integrated circuits used in this configuration are not common today. The circuit is from the 1983 Intersil Databook. The indicator is 8 digits.
Found in a1969’s neon lamp documentation, this circuit uses a high voltage transistor. The output...
This circuit controls two relays from a single temperature sensor. The first fires when the...
This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger...