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 is from American documentation from the 90s. The configuration is very current and can...
This circuit trips when the voltage set in the pot is exceeded. The tone depends on C3 and...
This circuit uses only two general purpose transistors and can be powered by the circuit under...