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Text File  |  1997-12-08  |  6.0 KB  |  103 lines
  1. This is some information about the led-board Roman Dolejsi 
  2. (roman@sorry.vse.cz) added support for.
  3.  
  4. -----------------------------------------------------------------------------
  5.  
  6.  
  7.  
  8. LED Meter on LPT port
  9. ---------------------
  10.   Here is the circuit plane for LED meter on LPT. It's very cheap and everyone
  11. can even do pass-through circuit to have it coexisting with printer or whatever.
  12. The resistor values are informative only, everybody can tune them to have
  13. intensity he/she wants (of course only if LEDs can live with that ;-)
  14.  
  15.           signal   pin       150Ω   (green LED, located most on the left/down)
  16.           D0       2      >───███──────|>|────────┐       DF0
  17.                              150Ω   (green LED)   │
  18.           D1       3      >───███──────|>|────────┤       DF1
  19.                              150Ω   (green LED)   │
  20.           D2       4      >───███──────|>|────────┤       DF2
  21.                              150Ω   (green LED)   │
  22.           D3       5      >───███──────|>|────────┤       DF3
  23.                              150Ω   (green LED)   │
  24.           D4       6      >───███──────|>|────────┤
  25.                              150Ω   (yellow LED)  │
  26.           D5       7      >───███──────|>|────────┤       HardDrive
  27.                              150Ω   (orange LED)  │
  28.           D6       8      >───███──────|>|────────┤
  29.                              150Ω   (red LED)     │
  30.           D7       9      >───███──────|>|────────┤       Power
  31.                                                   │
  32.           GND      20     >───────────────────────┘
  33.  
  34.  
  35. Bulb Meter on LPT port (LED Meter compatible)
  36. ---------------------------------------------
  37.   This is a circuit plane for building meter on LPT consisting of bulbs. You
  38. can make this one to have big lights in your room to enjoy emulation. It has
  39. been successfully tested with 100W bulbs and even 200W is ok. Of course you
  40. will be probably unable to drive it with hallogen lights :-)) but.. who knows..
  41. This circuit is projected for 220V/50Hz. It consists of two separated parts,
  42. one as the TTL driver working on LPT's 5V and the second one with the bulbs
  43. working on 220V. Warning! It's dangerous touching the circuit behind the opto.
  44. Please isolate it and make sure nobody can touch it... Values needn't be
  45. strictly those drawn on the circuit. When it doesn't shine try to decrease
  46. resistor values.
  47. This circuitry is property of Petr Slechta (Piitr). Building of it is on your
  48. own risk. Anyway, questions about it can be send to xslecht1@hwlab.felk.cvut.cz.
  49. Thyristor has czech naming convention. Don't know other equivalents but the
  50. only needed requirement is that it must be 1A capable.
  51.  
  52.                  5V part | 220V part !!! don't touch while running !!!
  53.                          |
  54. signal pin       anode┌──|───┐collector
  55.  D0     2  >─███──────┤ OPTO ├────┐                    (green, first)
  56.              2kΩ     ┌┤  |   ├────────███───────┐gate   BULB 220V,max 200W
  57.               cathode│└──|───┘    │   1k8Ω     ┌|<|────────(X)──┐ DF0
  58.                      │   | emitter│     cathode│  anode         │
  59.                      │┌──|───┐    │            │ THYRISTOR      │
  60.  D1     3  >─███──────┤  |   ├────┤            │   KT505 (1A)   │
  61.                      ├┤  |   ├────────███───────┐               │
  62.                      │└──|───┘    │            ├|<|────────(X)──┤ DF1
  63.                      │┌──|───┐    │            │                │
  64.  D2     4  >─███──────┤  |   ├────┤            │                │
  65.                      ├┤  |   ├────────███───────┐               │
  66.                      │└──|───┘    │            ├|<|────────(X)──┤ DF2
  67.                      │┌──|───┐    │            │                │
  68.  D3     5  >─███──────┤  |   ├────┤            │                │
  69.                      ├┤  |   ├────────███───────┐               │
  70.                      │└──|───┘    │            ├|<|────────(X)──┤ DF3
  71.                      │┌──|───┐    │            │                │
  72.  D4     6  >─███──────┤  |   ├────┤            │                │
  73.                      ├┤  |   ├────────███───────┐               │
  74.                      │└──|───┘    │            ├|<|────────(X)──┤
  75.                      │┌──|───┐    │            │                │
  76.  D5     7  >─███──────┤  |   ├────┤            │                │
  77.                      ├┤  |   ├────────███───────┐               │
  78.                      │└──|───┘    │            ├|<|────────(X)──┤ HardDrive
  79.                      │┌──|───┐    │            │                │
  80.  D6     8  >─███──────┤  |   ├────┤            │                │
  81.                      ├┤  |   ├────────███───────┐               │
  82.                      │└──|───┘    │            ├|<|────────(X)──┤
  83.                      │┌──|───┐    │            │                │
  84.  D7     9  >─███──────┤  |   ├────┤            │                │
  85.  GND    20 >─────────┴┤  |   ├────────███───────┐               │ Power
  86.                       └──|───┘    │            ├|<|────────(X)──┴─────┐
  87.                          |        │            │                      │
  88.                          |        └────────────────────┐              │
  89.                  5V part | 220V part           │ZENER  │              │
  90.                                                ├─|>|───┤              │
  91.                                                │ 15V   │              │
  92.                                                │       █ 50Ω          │
  93.                                                │       │              │
  94.                                                │       └─|<|─┐ non    │
  95.                                                │             │ el-lyt!│
  96.         (phase)                                │             │1µF/300V│
  97.            >───────────────────────────────────┴──███────────┴┬─┤├──┬─┤
  98.                                                   100Ω        │     │ │
  99.  220V/50Hz                                                    └─███─┘ │
  100.                                                                500kΩ  │
  101.            >──────────────────────────────────────────────────────────┘
  102.  
  103.