Simple fixture determines leakage of capacitors and semiconductor switches

https://www.electronics-lab.com/simple-fixture-determines-leakage-capacitors-semiconductor-switches/

The circuit in Figure 1a comprises a voltage follower, IC1 , and the reference-voltage source of IC2. IC1 is an Analog Devices AD8661 op amp, which has a guaranteed input-bias current of no more than 1 pA and a typical input-bias current of 0.3 pA (Reference 1), and IC2 is an Analog Devices ADR391 precision […]