Automatic telescrib

Automatic telescrib

The utility model relates to an all-automatic telescribe. A rectifying circuit, an amplifying circuit for inverted phases, an emitter follower circuit, a switch tube and a telephone recording switch are connected between a telephone and the telescribe, wherein, the circuits are successively connecte...

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Hauptverfasser: YINGFU NING, FAN NING
Format: Patent
Sprache:eng
Schlagworte:
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
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creator YINGFU NING
FAN NING
description The utility model relates to an all-automatic telescribe. A rectifying circuit, an amplifying circuit for inverted phases, an emitter follower circuit, a switch tube and a telephone recording switch are connected between a telephone and the telescribe, wherein, the circuits are successively connected, and two input ends of the rectifying circuit are connected in parallel with a city line of the telephone. The switch tube and the telephone recording switch are connected in series with a power negative end of the telescribe. An emitter output of the emitter follower circuit is connected with an input end of a recording amplifier. The utility model has the advantages of simple circuit, low cost, reasonable design, reliable work, convenience and application.
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A rectifying circuit, an amplifying circuit for inverted phases, an emitter follower circuit, a switch tube and a telephone recording switch are connected between a telephone and the telescribe, wherein, the circuits are successively connected, and two input ends of the rectifying circuit are connected in parallel with a city line of the telephone. The switch tube and the telephone recording switch are connected in series with a power negative end of the telescribe. An emitter output of the emitter follower circuit is connected with an input end of a recording amplifier. The utility model has the advantages of simple circuit, low cost, reasonable design, reliable work, convenience and application.</description><edition>6</edition><language>eng</language><subject>ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; TELEPHONIC COMMUNICATION</subject><creationdate>1997</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&amp;date=19971001&amp;DB=EPODOC&amp;CC=CN&amp;NR=2263851Y$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=19971001&amp;DB=EPODOC&amp;CC=CN&amp;NR=2263851Y$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YINGFU NING</creatorcontrib><creatorcontrib>FAN NING</creatorcontrib><title>Automatic telescrib</title><description>The utility model relates to an all-automatic telescribe. A rectifying circuit, an amplifying circuit for inverted phases, an emitter follower circuit, a switch tube and a telephone recording switch are connected between a telephone and the telescribe, wherein, the circuits are successively connected, and two input ends of the rectifying circuit are connected in parallel with a city line of the telephone. The switch tube and the telephone recording switch are connected in series with a power negative end of the telescribe. An emitter output of the emitter follower circuit is connected with an input end of a recording amplifier. 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A rectifying circuit, an amplifying circuit for inverted phases, an emitter follower circuit, a switch tube and a telephone recording switch are connected between a telephone and the telescribe, wherein, the circuits are successively connected, and two input ends of the rectifying circuit are connected in parallel with a city line of the telephone. The switch tube and the telephone recording switch are connected in series with a power negative end of the telescribe. An emitter output of the emitter follower circuit is connected with an input end of a recording amplifier. The utility model has the advantages of simple circuit, low cost, reasonable design, reliable work, convenience and application.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record>
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
TELEPHONIC COMMUNICATION
title Automatic telescrib
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