Multi-purpose resistor, capacitor, inductance measuring instrument circuit diagram

inductance

Multi-purpose resistor, capacitor, and inductance measuring instrument circuit

As shown in the figure, two 555 circuits with a multi-position selector switch and a micro-ampere current meter can measure capacitances from 100pF to 10μF, inductances from lmH to 10H, and resistances from 100n to IMn with a measurement accuracy of 2.5%.