Browse Prior Art Database

Differential Amplifier

IP.com Disclosure Number: IPCOM000094482D
Original Publication Date: 1965-Feb-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 24K

Publishing Venue

IBM

Related People

Gardener, PAE: AUTHOR

Abstract

A differential amplifier comprises three transistors T1, T2 and T3. One of the input signal terminals is connected to the base of T1 and the emitter of T2. The other input terminal connects to the base of T2 and the emitter of T1. Output signals from the collectors of T1 and T2 are applied to the emitter and base of transistor T3, respectively.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Differential Amplifier

A differential amplifier comprises three transistors T1, T2 and T3. One of the input signal terminals is connected to the base of T1 and the emitter of T2. The other input terminal connects to the base of T2 and the emitter of T1. Output signals from the collectors of T1 and T2 are applied to the emitter and base of transistor T3, respectively.

If the value of resistor R1 is low and is equal to the value of the combination of resistors R2 and R3 in parallel, the circuit provides good rejection of common mode signals.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]