This timer for long time intervals is from the 1990 Motorola Linear Databook. The setting applies to other operational ones and component values are given below the diagram.
This counterphase circuit is from a 1973 publication, and can work with mains voltages or 12 V....
This simple transistor tester was found in a Japanese magazine in 1967. It tests general purpose...
This basic 100 kHz oscillator is suitable for use in calibration. We found it in documentation from the...