This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger point. The components are of the time, difficulty to obtain these days.
The circuit shown in figure 1 serves to control a servo motor with a current of up to 200 mA. The...
This is a circuit with a period component that consisted of a voltage reference. The circuit is...
This amplifier, suggested by National Semiconductor (Now Texas Instruments), has high input...