Circuit with moderation variable wave shape to eliminate start and close popping noise

The invention relates to a circuit for eliminating the popping when switching on or switching off by the use of waveshape with easement change, comprising a switch,a feedback network, an operational amplifier and an output network. When switching on, the first input end of the switch is connected wi...

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Bibliographic Details
Main Authors LIAO DONGCAI, CAI MINGHONG
Format Patent
LanguageChinese
English
Published 17.10.2012
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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Summary:The invention relates to a circuit for eliminating the popping when switching on or switching off by the use of waveshape with easement change, comprising a switch,a feedback network, an operational amplifier and an output network. When switching on, the first input end of the switch is connected with a low potential, the output end of the output network provides a moderately raised working d. c.bias; when switching off, the first input end of the switch is connected with a reference potential,the output end of the output network provides a moderately degressive working d. c. bias; thereforeeliminating the popping or small noise when switching on or switching off, increasing the reaction speed of the system and saving the cost.
Bibliography:Application Number: CN2007186113