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                                                         *
   MEMBER NAME: PURPLE                                   *
                                                         *
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                         How to Construct a Purple Box.
                         ------------------------------


      The Purple Box is very simple to construct.  It takes only six components
 and a PC board if you want.  The Purple Box is a telephone hold button.  It
 will allow you to switch phones very easily.

      A red LED indicates when a party is on hold and is automatically
 extinguished when either party releases the line.

      To install your Purple Box, remove the telephone case and locate the red
 and green wires.  From the green wire, make a connection to L1 and from the
 red
 wire a connection to L2.

      To test the circuit, call a friend and then while pressing the push
 button, hang up the phone.  As soon as the phone is on the hook, you may let
 go
 of the push button.

 Parts:

      D1 = Light Emitting Diode (LED)
      D2 = 1N4003 Diode
      R1 = 820 ohm 1/2 Watt
      R2 = 1K ohm  1/2 Watt
      S1 = N.O. Push Button    S1
    SCR1 = C106B1          __|__
                        +--o   o---+----R1----+
                        |         g|          |
     +--------LED--R2---+-------a--+--c--D2---+
     |                                        |
     |L1                  SCR----/            |L2
     |                                        |
   To Green                                To Red


    The SCR is a three prong IC.  The a,g, and c tell you what pins to use. The
 "g" pin is the one on the left if you look at the numbers.

                                  Have Phun,
                                  The Flash



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