106 lines
3.2 KiB
Plaintext
106 lines
3.2 KiB
Plaintext
|
||
|
||
How To Build A Pink Box
|
||
|
||
The function of a "Pink Box" is to ad hold button that allows music or
|
||
anything else to be played into the telephone while the person is on
|
||
hold. This Modification either be done right in the telephone as a
|
||
separate box.
|
||
|
||
|
||
Materials Needed
|
||
|
||
1. Some Bell wire or Phone wire
|
||
2. A SPST momentary switch RS # 275-1547
|
||
3. 470 ohm resistor RS # 271-019
|
||
4. 1 LED (Approx 5V) RS # 276-041
|
||
5. An SCR, 2N5061 (Transistor)
|
||
6. Audio Transformer (Ratio 10K:600)
|
||
7. RCA phono Jack RS # 274-346
|
||
8. Screw drivers, Soldering Irons, Ser, Etc.
|
||
|
||
|
||
|
||
|
||
Construction
|
||
|
||
|
||
1. Open the wall box and locate the RED & GREEN wires.
|
||
|
||
2. Take a piece or RED wire and strip tend and attach it to the red lead
|
||
on the wall box. Do the same for the GN.
|
||
|
||
3. Connect the GREEN wire to the ANODE e of the LED.
|
||
|
||
4. Connect the CATHODE side of the LED the UPPER pin of the primary side
|
||
of the transformer. See diagram below.
|
||
|
||
_____
|
||
To one pole of phono ---! Top !--- To HODE of LED
|
||
-!View !- Primary side
|
||
To other phono pole ---!_____!--- To pole or trans. & one pole of
|
||
switch.
|
||
|
||
|
||
5. Connect the pin directly across format 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 Diameter
|
||
|
||
|
||
RCA Jack X-former LED
|
||
_____ C A
|
||
Pole or Jack --/---! Top !---/--(*)--\------GREEN wire
|
||
-!View !- Primary --I---RED wire
|
||
Pole of Jack --/---!_____!---/-I (O)
|
||
I I
|
||
I [--I-----Pole of Switch
|
||
I
|
||
I--------/--m--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 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 switch and
|
||
hang up the phone. The LED should go and your friend should hear music,
|
||
if not then start over. The hold is shut off if you pick up a phone on
|
||
that line or your end hangs up.
|
||
|