This circuit is designed to measure very weak currents, in the order of picoamperes. We found it in an American documentation from the 80s. The integrated circuit is from that time.
Operational LC Os The maximum frequency of this circuit depends on the operational, reaching a few...
RF voltmeters can be tested with this circuit that generates a test signal. We found it in old...
This circuit is based on a double operational amplifier of type NE5512 and is suggested by Philips...