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