This basic TTL watch and minute clock circuit was found in European documentation from the 1970s. The power supply is not included and is given in CB19635E. The circuit uses common anode displays.
The purpose of this circuit is to measure the intensity of audio signals. We found it in the...
The battery charger suggested in the figure has its current limited by resistor R1. This component can...
This differential amplifier, found in a 1964 Electronic Design, has a gain of 30. The setting can be...