mirror of
https://github.com/opsxcq/mirror-textfiles.com.git
synced 2025-09-01 14:32:33 +02:00
274 lines
16 KiB
Plaintext
274 lines
16 KiB
Plaintext
The Infinity Transmitter courtesy of the Jolly Roger
|
|
originally typed by:
|
|
<<<Ghost Wind>>>
|
|
|
|
FROM THE BOOK BUILD YOUR OWN
|
|
LASER, PHASER, ION RAY GUN & OTHER WORKING SPACE-AGE PROJECTS
|
|
BY ROBERT IANNINI (TAB BOOKS INC)
|
|
|
|
Description: Briefly, the Infinity Transmitter is a device which activates a
|
|
microphone via a phone call. It is plugged into the phone line, and when the
|
|
phone rings, it will immediately intercept the ring and broadcast into the
|
|
phone any sound that is in the room. This device was originally made by
|
|
Information Unlimited, and had a touch tone decoder to prevent all who did not
|
|
know the code from being able to use the phone in its normal way. This
|
|
version, however, will activate the microphone for anyone who calls while it is
|
|
in operation.
|
|
NOTE: It is illegal to use this device to try to bug someone. It is also
|
|
pretty stupid because they are fairly noticeable.
|
|
Parts List:
|
|
Pretend that uF means micro Farad, cap= capacitor
|
|
|
|
Part # Description
|
|
---- - -----------
|
|
R1,4,8 3 390 k 1/4 watt resistor
|
|
R2 1 5.6 M 1/4 watt resistor
|
|
R3,5,6 3 6.8 k 1/4 watt resistor
|
|
R7/S1 1 5 k pot/switch
|
|
R9,16 2 100 k 1/4 watt resistor
|
|
R10 1 2.2 k 1/4 watt resistor
|
|
R13,18 2 1 k 1/4 watt resistor
|
|
R14 1 470 ohm 1/4 watt resistor
|
|
R15 1 10 k 1/4 watt resistor
|
|
R17 1 1 M 1/4 watt resistor
|
|
C1 1 .05 uF/25 V disc cap
|
|
C2,3,5,6,7 5 1 uF 50 V electrolytic cap or tant
|
|
(preferably non-polarized)
|
|
C4,11,12 3 .01 uF/50 V disc cap
|
|
C8,10 2 100 uF @ 25 V electrolytic cap
|
|
C9 1 5 uF @ 150 V electrolytic cap
|
|
C13 1 10 uF @ 25 V electrolytic cap
|
|
TM1 1 555 timer dip
|
|
A1 1 CA3018 amp array in can
|
|
Q1,2 2 PN2222 npn sil transistor
|
|
Q3 1 D4OD5 npn pwr tab transistor
|
|
D1,2 2 50 V 1 amp react. 1N4002
|
|
T1 1 1.5 k/500 matching transformer
|
|
M1 1 large crystal microphone
|
|
J1 1 Phono jack optional for sense output
|
|
WR3 (24") #24 red and black hook up wire
|
|
WR4 (24") #24 black hook up wire
|
|
CL3,4 2 Alligator clips
|
|
CL1,2 2 6" battery snap clips
|
|
PB1 1 1 3/4x4 1/2x.1 perfboard
|
|
CA1 1 5 1/4x3x2 1/8 grey enclosure fab
|
|
WR15 (12") #24 buss wire
|
|
KN1 1 small plastic knob
|
|
BU1 1 small clamp bushing
|
|
B1,2 2 9 volt transistor battery or 9V ni-cad
|
|
|
|
Circuit Operation: Not being the most technical guy in the world, and not being
|
|
very good at electronics (yet), I'm just repeating what Mr. Iannini's said
|
|
about the circuit operation. The Transmitter consists of a high grain
|
|
amplifier fed into the telephone lines via transformer. The circuit is
|
|
initiated by the action of a voltage transient pulse occurring across the
|
|
phone line at the instant the telephone circuit is made (the ring, in other
|
|
words). This transient immediately triggers a timer whose output pin 3 goes
|
|
positive, turning on transistors Q2 and Q3. Timer TM1 now remains in this
|
|
state for a period depending on the values of R17 and C13 (usually about 10
|
|
seconds for the values shown). When Q3 is turned on by the timer, a simulated
|
|
"off hook" condition is created by the switching action of Q3 connecting the
|
|
500 ohm winding of the transformer directly across the phone lines.
|
|
Simultaneously, Q2 clamps the ground of A1, amplifier, and Q1, output
|
|
transistor, to the negative return of B1,B2, therefore enabling this amplifier
|
|
section. Note that B2 is always required by supplying quiescent power to TM1
|
|
during normal conditions. System is off/on controlled by S1 (switch).
|
|
A crystal mike picks up the sounds that are fed to the first two
|
|
transistors of the A1 array connected as an emitter follower driving the
|
|
remaining two transistors as cascaded common emitters. Output of the
|
|
array now drives Q1 capacitively coupled to the 1500 ohm winding of T1.
|
|
R7 controls the pick up sensitivity of the system.
|
|
Diode D1 is forward biased at the instant of connection and essentially
|
|
applies a negative pulse at pin 2 of TM1, initiating the cycle. D2 clamps
|
|
any high positive pulses. C9 dc-isolates and desensitizes the circuit. The
|
|
system described should operate when any incoming call is made without ringing
|
|
the phone.
|
|
|
|
Schematic Diagram: Because this is text, this doesn't look too hot. Please
|
|
use a little imagination! I will hopefully get a graphics drawing of this
|
|
out as soon as I can on a Fontrix graffile.
|
|
|
|
To be able to see what everything is, this character: | should appear as a
|
|
horizontal bar. I did this on a ][e using a ][e 80 column card, so I'm sorry if
|
|
it looks kinda weird to you.
|
|
|
|
Symbols:
|
|
resistor: -/\/\/- switch: _/ _
|
|
battery: -|!|!- capacitor (electrolytic): -|(-
|
|
capacitor (disc): -||- _ _
|
|
transistor:(c) > (e) Transformer: )||(
|
|
\_/ )||(
|
|
|(b) _)||(_
|
|
diode: |<
|
|
chip: ._____.
|
|
!_____! (chips are easy to recognize!)
|
|
|
|
Dots imply a connection between wires. NO DOT, NO CONNECTION.
|
|
ie.: _!_ means a connection while _|_ means no connection.
|
|
----------------------------------------------------------------------------
|
|
|
|
.________________________to GREEN wire phone line
|
|
|
|
|
| .______________________to RED wire phone line
|
|
| |
|
|
| | ._________(M1)______________.
|
|
| | | |
|
|
| | | R1 |
|
|
| | !__________/\/\/____________!
|
|
| | | _!_ C1
|
|
| | |this wire is the amp ___
|
|
| | |<=ground | R2
|
|
| | | !___________________/\/\/_____________.
|
|
| | | ._______!_______. |
|
|
| | !___________________!4 9 11!_____________________________!
|
|
| | | | | |
|
|
| | !___________________!7 12._____________________________!
|
|
| | | | A1 | R3 |
|
|
| | !___________________!10 ____*8!_______.____/\/\/____________! ^
|
|
| | | | / | | | |
|
|
| | | C4 | / | \ |2ma
|
|
| | !____||______. | / | /R4 B1 +
|
|
| | | || | | / | \ |!|!
|
|
| | | R7 | C2 | / | / |
|
|
| | !____/\/\/___!__)|__!8*_/ | | S1 |
|
|
| | | ^ | 6!_______! neg<__/.__!
|
|
| | | | C3 | | | C5 return |
|
|
| | | !_____|(___.__!3 | '-|(-| |
|
|
| | | | | 5 1!____________! |
|
|
| | | \ !_______._______! | B2|!|!
|
|
| | !________. R8 / | | +
|
|
| | | \ | | R6 |3ma
|
|
| | | !__________!____________________|_____/\/\/______! |
|
|
| | | R5 | | | v
|
|
| | !__/\/\/___________|____________________! |
|
|
| | | | |
|
|
| | | | |
|
|
| | | C6 | |
|
|
| | | |-)|-' R9 |
|
|
| | | !_________________/\/\/_______. |
|
|
| | | | | |
|
|
| | | Q1 _!_ | R10 |
|
|
| | !____________/ \____________________________!__/\/\/_____!
|
|
| | | | |
|
|
| | | | |
|
|
| | | C8 | |
|
|
| | !__________)|_______________________________|____________!
|
|
| | ! | |
|
|
| | / | |
|
|
| | -----| | |
|
|
| | | \ | |
|
|
| | | > | |
|
|
| | | | | |
|
|
| | | | | |
|
|
| | | !_____________. | |
|
|
| | | | | |
|
|
| | !__________. | | |
|
|
| | | | | |
|
|
| !________. | | ._____! |
|
|
| | | | | |
|
|
| | | | | |
|
|
| | | | | C7 |
|
|
| | | | '-|(-| |
|
|
| |_________|_________!_______.T1._________________| |
|
|
| | | 1500 )||( 500 |
|
|
| | | ohm )||( ohm |
|
|
| | !______.)||(.__. |
|
|
| | | | |
|
|
| | | | |
|
|
| | | > |
|
|
| | | |/ |
|
|
| | | +----| Q3 |
|
|
| | | | |\ |
|
|
!____________________|_________|_______|______!__. D1 C9 |
|
|
| | | '-|<---|(------| |
|
|
.______________! | | | |
|
|
| | | | |
|
|
| .________________! | | |
|
|
| | | | |
|
|
\ | .________________! C11 | |
|
|
/ | | .___||____________! |
|
|
R13 \ | | | || | |
|
|
/ | | | | |
|
|
\ !___.___|_______________________! | |
|
|
| | | | | R16 | R15 |
|
|
| v | | !___/\/\/\________!___/\/\/_!
|
|
| neg | | | D2 | |
|
|
| return | | !_____|<__________! |
|
|
| B1,B2 | \ | | |
|
|
| | / | .____________!_. |
|
|
| | \R14 |C12 | TM1 2 | |
|
|
| | / !_||_!5 4!_______!
|
|
| | \ | || | | |
|
|
| | | !____!1 8!_______!
|
|
| | | | | 7 6 3 | |
|
|
| | | | !_____._.____._! |
|
|
| | | | | | | |
|
|
| | | | C13 | | | R17 |
|
|
| | | !___)|_____!_!____|__/\/\/__!
|
|
| | | | | |
|
|
!___________|___!_______________________|_________________! |
|
|
| | | |
|
|
| \ | C10 |
|
|
| /R18 !__________)|_______________!
|
|
| \
|
|
| /
|
|
| |
|
|
!___O J1
|
|
sense output
|
|
|
|
Construction notes: Because the damned book just gave a picture instead of step
|
|
by step instructions, and I'll try to give you as much help as possible. Note
|
|
that all the parts that you will be using are clearly labeled in the schematic.
|
|
The perfboard, knobs, 'gator clips, etc are optional. I do strongly suggest
|
|
that you do use the board!!! It will make wiring the components up much much
|
|
easier than if you don't use it.
|
|
The knob you can use to control the pot (R7). R7 is used to tune the IT so
|
|
that is sounds ok over the phone. (You get to determine what sounds good) By
|
|
changing the value of C13, you can change the amount of time that the circuit
|
|
will stay open (it cannot detect a hang up, so it works on a timer.) A value of
|
|
100 micro Farads will increase the time by about 10 times.
|
|
The switch (S1) determines whether or not the unit is operational. Closed is
|
|
on. Open is off. The negative return is the negative terminals of the battery!!
|
|
The batteries will look something like this when hooked up:
|
|
|
|
<-v_____. .______. ._____. .____->
|
|
| | | | | |
|
|
__!___!__ | | __!___!__
|
|
| + - | !_/ _! | + - |
|
|
| | switch ^ | |
|
|
| 9volts| | | 9volts|
|
|
!_______! neg return !_______!
|
|
|
|
To hook this up to the phone line, there are three ways, depending upon what
|
|
type of jack you have. If it is the old type (non modular) then you can just
|
|
open up the wall plate and connect the wires from the transmitter directly to
|
|
the terminals of the phone.
|
|
If you have a modular jack with four prongs, attach the red to the negative
|
|
prong (don't ask me which is which! I don't have that type of jack... I've only
|
|
seen them in stores), and the green to the positive prong, and plug in. Try not
|
|
to shock yourself...
|
|
If you have the clip-in type jack, get double male extension cord (one with a
|
|
clip on each end), and chop off one clip. Get a sharp knife and splice off the
|
|
grey protective material. You should see four wires, including one green and
|
|
one red. You attach the appropriate wires from the IT to these two, and plug
|
|
the other end into the wall.
|
|
|
|
Getting the IT to work: If you happen to have a problem, you should attempt to
|
|
do the following (these are common sense rules!!) Make sure that you have the
|
|
polarity of all the capacitors right (if you used polarized capacitors, that
|
|
is). Make sure that all the soldering is done well and has not short circuited
|
|
something accidently (like if you have a glob touching two wires which should
|
|
not be touching.) Check for other short circuits. Check to see if the battery
|
|
is in right. Check to make sure the switch is closed.
|
|
If it still doesn't work, drop me a line on one of the Maryland or Virginia
|
|
BBSs and I'll try to help you out.
|
|
|
|
The sense output: Somehow or other, it is possible to hook something else up to
|
|
this and activate it by phone (like an alarm, flashing lights, etc.)
|
|
|
|
As of this writing, I have not tried to make one of these, but I will. If you
|
|
actually get it working, leave me a note somewhere.
|
|
|
|
I sure hope all you people appreciate this.
|
|
|