FET_TESTER

Published:2009/7/11 3:57:00 Author:May | From:SeekIC

Can be used for measuring JFET pinchoff voltage, matching FETs of same ge-neric type, and measuring bias range of FET. Opamps sense source current of FET under test. First 741 is buffer, while second is preset to 1 V and its output used to drive device under test (DUT) until source current is 100 μA. Polarity of VP is opposite that of VDD.-Circuits, 73Mag-azine, June 1977, p 49.



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