Found in a 90s Radio Electronics, this circuit uses a ceramic capacitor (C1) as a sensor. The operational amplifier is a double 741 of the time.
This adjustable circuit from 0 to 200 nA was found in a 90's EDN. The components can still be...
We found this circuit in a technical documentation from the 70s. The MC1555 is nothing more than...
Based on common operational amplifiers, this circuit was found in Texas Instruments documentation. The power...