Test circuit of current-voltage conversion amplifier

Details Test circuit of current-voltage conversion amplifier Test circuit of current-voltage conversion amplifier

1995-04-25

1996-12-17

Tokar, Michael

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

324549, G01R 3102

Patent

active

055857310

ABSTRACT:
A test circuit for testing a current-voltage conversion amplifier having photodiode (PD) without actually exposing light to PD, including a current mirror circuit having a first NPN transistor and a second NPN transistor, an input terminal for applying a test voltage, a resistor connected between the input terminal and a collector of the first NPN transistor, and a current terminal connected to a collector of the second NPN transistor. The test circuit passes a current from the current-voltage conversion amplifier to the current terminal according to the test voltage which is applied to the input terminal.

REFERENCES:
patent: 5320732 (1994-06-01), Nankai et al.
patent: 5425011 (1995-06-01), Kusano et al.

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