ELECTROMETER

Published:2009/7/15 1:33:00 Author:Jessie | From:SeekIC

Can be used for picoampere leakage measurements and nonloading voltage measurements. Bridge circuit has three pots for three ranges of sensitivity. Adjust for 0.5, 1.5, and 5 V full scale with appropriate input voltages. With 1000-megohm resistance between point 5 and probe tip, picoammeter gives full-scale deflection on 500 pA. For nonloading voltmeter, apply unknown voltage across same l000-megohm resistor; now 0.5 V will give fullscale reading.-I. Math, Math's Notes, CQ, Oct. 1974, p 26--27.



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