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Simulated Inductive Components

IP.com Disclosure Number: IPCOM000093645D
Original Publication Date: 1967-Nov-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 22K

Publishing Venue

IBM

Related People

Ayling, JK: AUTHOR [+2]

Abstract

By placing a feedback resistor RF from the output to the input of a Miller integrator, well controlled inductive properties can be obtained at the input terminals of the integrator. With transistor T1 normally conducting, a step function applied across inputs A and B causes the voltage on the collector of T1 to decrease gradually in a ramp function as capacitor C discharges through the transistor T1. This in turn proportionally decreases the current fed back through resistor RF to the input so as to cause the impedance between terminals A and B to appear to be inductive to the circuits across such terminals.

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Simulated Inductive Components

By placing a feedback resistor RF from the output to the input of a Miller integrator, well controlled inductive properties can be obtained at the input terminals of the integrator. With transistor T1 normally conducting, a step function applied across inputs A and B causes the voltage on the collector of T1 to decrease gradually in a ramp function as capacitor C discharges through the transistor T1. This in turn proportionally decreases the current fed back through resistor RF to the input so as to cause the impedance between terminals A and B to appear to be inductive to the circuits across such terminals.

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