Found in a 1968 American documentation, this circuit generates sawtooth signals whose rise and fall times are determined by C1 and C2. Transistors support modern equivalents.
This circuit was found in an old documentation and can be powered by a solar panel. The touch...
This circuit was obtained from 1967 documentation. It uses a sensor to determine the trigger...
This sophisticated logic probe for 5 to 12 V circuits (CMOS and TTL) was found in a 1980s...