This circuit can be adjusted between 0.2 and 2 V to trigger with chosen voltages comparing them with the input voltages. We found it in a 1967 documentation.
We found this circuit in the May 1972 issue of Radio Electronics magazine. Its purpose is to teach...
This oscillator is a 1950s application of one of the first types of commercial transistors, the...
We found this circuit in the Philips integrated circuits manual of 1990. The basic component is...