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...

Ausführliche Beschreibung

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Hauptverfasser: YINGFU NING, FAN NING
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.