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Text File  |  1998-03-19  |  4.5 KB  |  114 lines
  1. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  2. (>                                                        <)
  3. (>                     Olive Box Plans                    <)
  4. (>                                                        <)
  5. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  6.  
  7.     This is a relatively new box,  and all it basically does
  8. is  serve  as a  phone ringer.    You have  two choices  for
  9. ringers, a piezoelectric transducer (ringer),  or a standard
  10. 8 ohm speaker.   The speaker has a more pleasant tone to it,
  11. but either will do fine.    This circuit can also be used in
  12. conjunction with a rust box to control an external something
  13. or other  when the  phone  rings.   Just  connect  the 8 ohm
  14. speaker output to the  inputs on  the rust box,  and control
  15. the pot to tune it to light the light (which can be replaced
  16. by a relay for external controlling) when the phone rings.
  17.  
  18.  
  19.  
  20.              ______________
  21.             |              |        ^
  22.        NC --|-- 5      4 --|-----/\/\/------->G
  23.             |              |      / R2
  24. G<----)|----|-- 6      3 --|-- NC
  25.     | C3    |      U1      |
  26.      -------|-- 7      2 --|---------- --- -- - > TO RINGER
  27.             |              |
  28.         ----|-- 8      1 --|--
  29.        |    |______________|  |
  30.        |                       ---/\/\/----|(----- L1
  31.        |                           R1      C1
  32.         ------------------------------------------ L2
  33.  
  34.                   a. Main ringer TTL circuit
  35.  
  36. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  37.  
  38.                                    _
  39. FROM PIN 2 < - -- --- ----------| |_| |------------->G
  40.                                     P1
  41.  
  42.                   b. Peizoelectric transducer
  43.  
  44. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  45.  
  46.                                                       __  /|
  47. FROM PIN 2 < - -- --- ---------|(---------.  .-------|  |/ |
  48.                                           >||<       |S1|  |
  49.                                           >||<     --|  |  |
  50.                                           >||<    |  |__|\ |
  51.                               G<---------.>||<.---        \|
  52.                                            T1
  53.                 c. Elctro magnetic transducer
  54. Parts List
  55. ----------
  56.  
  57. U1 - Texas Instruments TCM1506
  58. T1 - 4000:8 ohm audio transfomer
  59. S1 - 8 ohm speaker
  60. R1 - 2.2k resistor
  61. R2 - External variable resistor; adjusts timing frequency
  62. C1 - .47uF capacitor
  63. C2 - .1uF capacitor
  64. C3 - 10uF capacitor
  65. L1 - Tip
  66. L2 - Ring
  67.      L1 and L2 are the phone line.
  68.  
  69.  
  70. Shift Rate:
  71. -----------
  72.  
  73.   This is the formula for determining the shift rate:
  74.  
  75.                    1                   1
  76.     SR = --------------------- = ------------ = 6.25 Hz
  77.          (DSR(1/f1)+DSR(1/f2))    128     128
  78.                                  ----  + ----
  79. B (                               1714    1500
  80.  
  81.  
  82.               DSR = Shift Devider Rate ratio = 128
  83.      I        f1 = High Output Frequency = 1714
  84.        B_cD02 = Low Output Frequency = 1500
  85.  
  86.  
  87. (>:::::::r:2::::::::::::::::::::::::::::::::::::::::::::::<)
  88. (>    Another fine box plan by:                           <)
  89. (>                                                        <)
  90. (>                       A R N O L D !                    <)
  91. (>                                                        <)
  92. (>    Sysop: HHAE East                                    <)
  93. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  94. (>    Hobbit Hole Network:                                <)
  95. (>                                                        <)
  96. (>  Hobbit Hole AE Line Network HQ ..... (609)-429-3641   <)
  97. (>          3 drives... No password... 300b only          <)
  98. (>                                                        <)
  99. (>  Hobbit Hole AE Line North Branch ... (215)-271-0778   <)
  100. (>          x drives... No password... 300/1200b          <)
  101. (>                                                        <)
  102. (>  Hobbit Hole AE Line East Branch .... (201)-271-0256   <)
  103. (>   4 drives... No password... 300b, 1200 AFTER logon    <)
  104. (>                                                        <)
  105. (>  Sirius Cybernetics 60 Megs ......... (808)-528-2436   <)
  106. (>  one of the largest phreak boards in the country!      <)
  107. (>                                                        <)
  108. (>::::::::::::::::::::::::::::::::::::::::::::::::::::::::<)
  109.  
  110.  
  111.  
  112. DOWNLOADED FROM P-80 SYSTEMS......
  113.