Voltage or contact closure sensor
An external signal sensor uses a single sensing circuit to detect a DC voltage or an AC voltage or a contact closure. The circuit can sense different isolated signals with relatively low power consumption. According to various embodiments, an isolation transformer has a primary winding that is fed b...
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creator | SHUEY KENNETH C |
description | An external signal sensor uses a single sensing circuit to detect a DC voltage or an AC voltage or a contact closure. The circuit can sense different isolated signals with relatively low power consumption. According to various embodiments, an isolation transformer has a primary winding that is fed by an oscillator signal. A secondary winding of the isolation transformer is open when no contact closure or AC or DC voltage is present, but is closed when a contact closure is present or when an AC or DC voltage is present. When the secondary winding is open, a status signal at an output of the sensing circuit has a logical high value. When the secondary winding is closed, the status signal has a logical low value. In this way, the same sensing circuit can be used to detect either a contact closure or an AC or DC voltage. |
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According to various embodiments, an isolation transformer has a primary winding that is fed by an oscillator signal. A secondary winding of the isolation transformer is open when no contact closure or AC or DC voltage is present, but is closed when a contact closure is present or when an AC or DC voltage is present. When the secondary winding is open, a status signal at an output of the sensing circuit has a logical high value. When the secondary winding is closed, the status signal has a logical low value. In this way, the same sensing circuit can be used to detect either a contact closure or an AC or DC voltage.</description><language>eng</language><subject>MEASURING ; MEASURING ELECTRIC VARIABLES ; MEASURING MAGNETIC VARIABLES ; PHYSICS ; TESTING</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141202&DB=EPODOC&CC=US&NR=8901915B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20141202&DB=EPODOC&CC=US&NR=8901915B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>SHUEY KENNETH C</creatorcontrib><title>Voltage or contact closure sensor</title><description>An external signal sensor uses a single sensing circuit to detect a DC voltage or an AC voltage or a contact closure. The circuit can sense different isolated signals with relatively low power consumption. According to various embodiments, an isolation transformer has a primary winding that is fed by an oscillator signal. A secondary winding of the isolation transformer is open when no contact closure or AC or DC voltage is present, but is closed when a contact closure is present or when an AC or DC voltage is present. When the secondary winding is open, a status signal at an output of the sensing circuit has a logical high value. When the secondary winding is closed, the status signal has a logical low value. In this way, the same sensing circuit can be used to detect either a contact closure or an AC or DC voltage.</description><subject>MEASURING</subject><subject>MEASURING ELECTRIC VARIABLES</subject><subject>MEASURING MAGNETIC VARIABLES</subject><subject>PHYSICS</subject><subject>TESTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2014</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAMy88pSUxPVcgvUkjOzytJTC5RSM7JLy4tSlUoTs0rzi_iYWBNS8wpTuWF0twMCm6uIc4euqkF-fGpxQWJyal5qSXxocEWlgaGloamTkbGRCgBAElPJZI</recordid><startdate>20141202</startdate><enddate>20141202</enddate><creator>SHUEY KENNETH C</creator><scope>EVB</scope></search><sort><creationdate>20141202</creationdate><title>Voltage or contact closure sensor</title><author>SHUEY KENNETH C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_US8901915B23</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2014</creationdate><topic>MEASURING</topic><topic>MEASURING ELECTRIC VARIABLES</topic><topic>MEASURING MAGNETIC VARIABLES</topic><topic>PHYSICS</topic><topic>TESTING</topic><toplevel>online_resources</toplevel><creatorcontrib>SHUEY KENNETH C</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>SHUEY KENNETH C</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Voltage or contact closure sensor</title><date>2014-12-02</date><risdate>2014</risdate><abstract>An external signal sensor uses a single sensing circuit to detect a DC voltage or an AC voltage or a contact closure. The circuit can sense different isolated signals with relatively low power consumption. According to various embodiments, an isolation transformer has a primary winding that is fed by an oscillator signal. A secondary winding of the isolation transformer is open when no contact closure or AC or DC voltage is present, but is closed when a contact closure is present or when an AC or DC voltage is present. When the secondary winding is open, a status signal at an output of the sensing circuit has a logical high value. When the secondary winding is closed, the status signal has a logical low value. In this way, the same sensing circuit can be used to detect either a contact closure or an AC or DC voltage.</abstract><oa>free_for_read</oa></addata></record> |
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subjects | MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING |
title | Voltage or contact closure sensor |
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