Using an operational amplifier, this circuit from a 90s Popular Electronics, is characterized by its high sensitivity. R5 can be added to control the gain.
We found this circuit in a 90's EDN. The circuit is based on a control integrated that is still...
This circuit is based on a Texas LinMOS integrated circuit that consists of an operational...
This circuit, when connected to the 110 V power grid makes it possible to test capacitors with...