This circuit allows you to read resistors up to 20 M ohms, converting it into voltage. The circuit is from the 90s. The operational ones used admit modern equivalents.
The load used in this experimental circuit is a small incandescent lamp but it can be replaced by...
This simple 10-position roulette circuit with the 4017 found a 1987 documentation. The circuit can...
This is a Serial In - Parallel Out or Serial Out [SIPO or SISO] shift register using the...