Q Meter Block Diagram. So Q XL R oL R. The oscillator output reaches the current to voltage converter through a selectable source resistance R s and the component under test DUT.
The signal may be amplified before being applied to Schmitt trigger. On the contrary the AC measurements require excitation of the Wheatstone bridge with AC signal. The unknown frequency signal is fed to the Schmitt trigger.
The oscillator drives a current through a low value of resistance R sh.
An interior view of the Q Meter. The oscillator output reaches the current to voltage converter through a selectable source resistance R s and the component under test DUT. Meter is shown in Figure. For providing AC excitation the oscillator is used in the circuit.
