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Differential Amplifier

IP.com Disclosure Number: IPCOM000095397D
Original Publication Date: 1965-Dec-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 26K

Publishing Venue

IBM

Related People

Gardner, PAE: AUTHOR

Abstract

The differential amplifier comprises transistors T1 and T2 connected as a feedback pair. The collector load of transistor T1 is provided by two resistors R1 and R2. Feedback is applied from the junction of these resistors through capacitor C1 to the emitter of T1. By the application of one differential input to the emitter of T2 and the use of the feedback applied through C1 the input impedance of the amplifier is made very low.

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Differential Amplifier

The differential amplifier comprises transistors T1 and T2 connected as a feedback pair. The collector load of transistor T1 is provided by two resistors R1 and R2. Feedback is applied from the junction of these resistors through capacitor C1 to the emitter of T1. By the application of one differential input to the emitter of T2 and the use of the feedback applied through C1 the input impedance of the amplifier is made very low.

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