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.
This circuit generates a signal whose frequency can be calculated using the formula next to the...
This circuit was found in the March 1997 Electronics Now magazine. It uses a common analog...
At dusk this circuit triggers a relay switching lamps. The circuit can be powered from 6 to 12 V...