This circuit uses a transistor as a sensor and operates in the range of 0 to 50º C. We found it in old documentation. Operational equivalents can be used.
This circuit was obtained from the July 1970 issue of Radio Electronics magazine. Zeners are power...
This SCS counter circuit was found in a 1964 General Electric documentation. The circuit has a...
This circuit is from 1988 documentation. It uses a range of 30 LEDs driven by 4017 integrated...