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 switching boost regulator, which provides a 24 V output from a 12 V input, was found in the...
This is a discrete equivalent version of an open collector TTL gate. What we have is an inverter...
This circuit is from a 1970 publication, having been implemented with germanium PNP transistors. We can...