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Simple Telephone Recorder Circuit Schematic Diagram

This simple circuit diagram lets you record your phone conversations automatically. The device connects to the phone line, your tape recorder’s microphone input, and the recorder’s remote control jack. It senses the voltage in the phone line and begins recording when the line drops to 5 volts or less.

parts :

R1—————————270K 1/4 W Resistor

R2—————————1.5K 1/4 W Resistor

R3—————————68K 1/4 W Resistor

R4—————————-33K 1/4 W Resistor

C1—————————-0.22uF 150 Volt Capacitor

Q1—————————-Q222N4954 NPN Transistor

D1—————————-1N645 Diode

MISC1———————–Wire, Plugs To Match Jacks On Recorder, Board, Phone Plug

source : www.aaroncake.net
phone-recorder

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December 12th, 2009 | Tags: , , , , , , | Category: Simple Electronic Applications

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4 comments to Simple Telephone Recorder Circuit Schematic Diagram

  • afzal
    April 2nd, 2010 at 8:53 am

    no full discription for eg
    what is control jerk where is memory for storing the recorded sound

  • albert
    June 25th, 2010 at 7:27 pm

    sir may i know the conection of this stated diagram of phone recorder

  • albert
    June 25th, 2010 at 7:30 pm

    what is the function of remote control jack

  • ZnaxQue
    August 13th, 2010 at 8:58 am

    Connect the “Mic Jack” cables to the tape recorders mic input. On a tape recorder (not a cassette deck) you usually will find a jack that says “tape control”, or equal. This connector controls if the tape will run or not. Kind of.

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