Current-to-voltage converter with highpass filter function

Details Current-to-voltage converter with highpass filter function Current-to-voltage converter with highpass filter function

1997-11-05

1999-09-14

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including signal feedback means

330 85, H03F 134

Patent

active

059528850

ABSTRACT:
A current-to-voltage converter with highpass filter function constructed according to the present invention contains two operational amplifiers OP1 and OP2, two resistors R.sub.1 and R.sub.2, and a capacitor C.sub.1. The noninverting (+) terminal of the operational amplifier OP1 is grounded. The inverting (-) terminal of the operational amplifier OP1 is used to receive the output of the current-type sensing device and connected to the output terminal of the operational amplifier OP2 via the resistor R.sub.2. The output terminal of the operational amplifier OP1 is connected to the noninverting terminal of the operational amplifier OP2. The output of the operational amplifier OP2 is fed back to the inverting terminal of the operational amplifier OP2 via the capacitor C.sub.1, and the inverting terminal of the operational amplifier OP2 is connected to one terminal of the resistor R.sub.1 of which another terminal is grounded.

REFERENCES:
patent: 4999584 (1991-03-01), Eskelinen
patent: 5606277 (1997-02-01), Feliz

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