home *** CD-ROM | disk | FTP | other *** search
/ The Unsorted BBS Collection / thegreatunsorted.tar / thegreatunsorted / texts / boxes / olive.box < prev    next >
Text File  |  1992-01-12  |  4KB  |  92 lines
  1.  
  2. ***********************************************************
  3.                                                           *
  4.     MEMBER NAME: OLIVE                                    *
  5.                                                           *
  6. ***********************************************************
  7.  
  8.  
  9.   (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  10.   (>                                                        <)
  11.   (>                     Olive Box Plans                    <)
  12.   (>                                                        <)
  13.   (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  14.  
  15.       This is a relatively new box,  and all it basically does
  16.   is  serve  as a  phone ringer.    You have  two choices  for
  17.   ringers, a piezoelectric transducer (ringer),  or a standard
  18.   8 ohm speaker.   The speaker has a more pleasant tone to it,
  19.   but either will do fine.    This circuit can also be used in
  20.   conjunction with a rust box to control an external something
  21.   or other  when the  phone  rings.   Just  connect  the 8 ohm
  22.   speaker output to the  inputs on  the rust box,  and control
  23.   the pot to tune it to light the light (which can be replaced
  24.   by a relay for external controlling) when the phone rings.
  25.  
  26.  
  27.  
  28.                ______________
  29.               |              |                 NC --|-- 5      4 --|-----/X/X/------->G
  30.               |              |      / R2
  31.   G<----)|----|-- 6      3 --|-- NC
  32.       | C3    |      U1      |
  33.        -------|-- 7      2 --|---------- --- -- - > TO RINGER
  34.               |              |
  35.           ----|-- 8      1 --|--
  36.          |    |______________|  |
  37.          |                       ---/X/X/----|(----- L1
  38.          |                           R1      C1
  39.           ------------------------------------------ L2
  40.  
  41.                     a. Main ringer TTL circuit
  42.  
  43.   (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  44.  
  45.                                      _
  46.   FROM PIN 2ive:< - -- --- ----------| |_| |------------->G
  47.                                       P1
  48.  
  49.             f       b. Peizoelectric transducer
  50.  
  51.   (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  52.  
  53.                                                         __  /|
  54.   FROM PIN 2 < - -- --- ---------|(---------.  .-------|  |/ |
  55.                                             >||<       |S1|  |
  56.                                             >||<     --|  |  |
  57.                                             >||<    |  |__|X |
  58.                                 G<---------.>||<.---        X|
  59.                                              T1
  60.                   c. Elctro magnetic transducer
  61.   Parts List
  62.   ----------
  63.  
  64.   U1 - Texas Instruments TCM1506
  65.   T1 - 4000:8 ohm audio transfomer
  66.   S1 - 8 ohm speaker
  67.   R1 - 2.2k resistor
  68.   R2 - External variable resistor; adjusts timing frequency
  69.   C1 - .47uF capacitor
  70.   C2 - .1uF capacitor
  71.   C3 - 10uF capacitor
  72.   L1 - Tip
  73.   L2 - Ring
  74.        L1 and L2 are the phone line.
  75.  
  76.  
  77.   Shift Rate:
  78.   -----------
  79.  
  80.     This is the formula for determining the shift rate:
  81.  
  82.             f        1                   1
  83.       SR = --------------------- = ------------ = 6.25 Hz
  84.            (DSR(1/f1)+DSR(1/f2))    128     128
  85.                                    ----  + ----
  86.                                    1714    1500
  87.  
  88.  
  89.                 DSR = Shift Devider Rate ratio = 128
  90.                  f1 = High Output Frequency = 1714
  91.                  f2 = Low Output Frequency = 1500