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Direct Coupled High CMV Solid State Amplifier

IP.com Disclosure Number: IPCOM000091974D
Original Publication Date: 1968-Jul-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Hayes, RA: AUTHOR

Abstract

This amplifier operates in the presence of a high common mode voltage CMV. The amplifier comprises two subamplifiers 10 and 12 connected by a resistive common mode voltage attenuator 14. Subamplifier 10, supplied from floating power supply 16, accepts a differential input at terminals 18 and 20. The closed loop internal feedback of this amplifier provides at least as much differential gain as required by the overall amplifier. Subamplifier 12 acts as a buffer and output amplifier. Amplifier 12 utilizes a differential input and produces a single-ended output between terminal 22 and system ground 23. Amplifier 12 is driven from a ground-referenced power supply 24. Interstage attenuator 14 drops the common mode voltage to a level compatible with the solid-state components of subamplifier 12.

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Direct Coupled High CMV Solid State Amplifier

This amplifier operates in the presence of a high common mode voltage CMV. The amplifier comprises two subamplifiers 10 and 12 connected by a resistive common mode voltage attenuator 14. Subamplifier 10, supplied from floating power supply 16, accepts a differential input at terminals 18 and 20. The closed loop internal feedback of this amplifier provides at least as much differential gain as required by the overall amplifier. Subamplifier 12 acts as a buffer and output amplifier. Amplifier 12 utilizes a differential input and produces a single-ended output between terminal 22 and system ground 23. Amplifier 12 is driven from a ground-referenced power supply 24. Interstage attenuator 14 drops the common mode voltage to a level compatible with the solid-state components of subamplifier 12. Guard shield 26 is coupled between the source of common mode voltage 28 and floating ground reference 30.

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