Browse Prior Art Database

DC Restorer

IP.com Disclosure Number: IPCOM000079047D
Original Publication Date: 1973-Apr-01
Included in the Prior Art Database: 2005-Feb-26
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Wrage, RH: AUTHOR

Abstract

This DC restorer prevents loss of signals, due to a shift in the DC level brought about by an unsymmetrical pulse pattern.

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DC Restorer

This DC restorer prevents loss of signals, due to a shift in the DC level brought about by an unsymmetrical pulse pattern.

Initially, input D1 is raised, thereby turning transistors T3 and T5 on and maintaining transistors T4 and T1 off. When a bipolar input pulse causes input terminal A1 to be positive and input terminal B1 to go negative, transistor T1 turns on while transistor T3 is turned off. This produces an up level at output 01 and a down level at output 02. Alternatively, if an input pulse lowered terminal A1 and caused terminal B1 to raise, there would be no change in the voltages at the output terminal from those resulting in the initial application of a positive input to terminal D1.

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