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.
Found in Radio Electronics from the 80's, this circuit can also be controlled by a microcontroller acting...
In other circuits we have seen a circuit for this application whose calculations have been...
This oscillator produces a sawtooth and square signals in the low frequency range. Other...