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=/=> How To Build A Pink Box <=\=/=\=/=\=/=\=/=\=> Written By Baba O'Riley <=\=

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   The function of a Pink Box is to add a hold button that allows music or

anything else to be played into the telephone while the person is on hold.

This box can either be built right in the telephone or as a seperate box.

 

\=/=\=/=\=/=\=/=\=/=\=/=\=/=> Materials Needed <=\=/=\=/=\=/=\=/=\=/=\=/=\=/=\

 

    some Bell wire or phone wire

    a SPST momemtary switch       RS # 275-1547

    one resistor, 470 ohms        RS # 271-019

    one LED, 5 volts              RS # 276-041

    one SCR, number 2N5061

    audio transformer (Ratio 10K:600)

(Pause)...More(y/n/ns)? ns
    RCA phono jack                RS # 274-346

    screwdrivers, soldering iron, solder, etc.

 

/=\=/=\=/=\=/=\=/=\=/=\=/=\=/=> Construction <=\=/=\=/=\=/=\=/=\=/=\=/=\=/=\=/=

 

 1. Open the wall box and locate the RED and GREEN wires.

 2. Take a piece of RED wire, strip the end, and attach it to the red lead on

    the wall box.  Do the same for the GREEN.

 3. Connect the GREEN wire to the ANODE end of the LED.

 4. Connect the CATHODE end of the LED to the UPPER pin of the primary side of

    the transformer (See diagram below).

                           _____

   To one phono pole   ---! Top !--- To CATHODE of LED

                         -!View !- Primary side

 To other phono pole   ---!_____!--- To pole or trans. & one pole of switch

 

 5. Connect the pin directly across to one pole of the phono jack.

 6. Connect the RED wire to one side of resistor and to the C pole of the

    transistor.

 7. Connect the open pin of the switch the other side of the resistor and to

    the G pole of the transistor.

 

=/=\=/=\=/=\=/=\=/=\=/=\=/=\=/=> Wiring Diagram <=/=\=/=\=/=\=/=\=/=\=/=\=/=\=

 

          RCA Jack  Transformer   LED

                      _____      C   A

  Pole of Jack --/---! Top !---/--(*)--\------GREEN wire

                    -!View !- Primary   --I---RED wire

  Pole of Jack --/---!_____!---/-I       (O)

                                 I        I

                                 I     [--I-----Pole of Switch

                                 I

                                 I--------------Pole of Switch

 

=/=\=/=\=/=\=/=\=/=\=/=\=/=\=/=> Key To Symbols <=/=\=/=\=/=\=/=\=/=\=/=\=/=\=

 

--       Wire

I        Connection or wire

/        Connection or wire

_/       C pole of transistor    --(*)--

[_)--    G pole of transistor    I

 I       A pole of transistor   (O)  Resis

                                 I

     _____

 ---! Top !---

   -! View!- Primary    Transformer

 ---!_____!---

 

=/=\=/=\=/=\=/=\=/=\=/=\=/=\=> Use Of The Pink Box <=\=/=\=/=\=/=\=/=\=/=\=/=\=

 

    Hook the RED and GREEN wires up to the appropriate terminals and hook the

RCA jack to the output on your stereo.  Turn on your stereo at a good volume.

Now call a friend.  To test the Box, hold down the switcn and hang up the

phone.  The LED should go on and your friend should hear music.  If nothing

happens, start over.  The hold is shut off if you pick up a phone on that line

