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| --------- 0-5V --------- ~220V ---------------- | PC |===>===|Circuit|========|Coffee-Machine| --------- --------- ---------------- | 
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|       Back View          -----    Pin 10 - ACK
      Male DB-25         |   |    Pin  9 - D7
      Connector          |   |                           Pin 2 - D0
                         v   v                           v   Pin 1 -
~Strobe
       ____________________________________________________________
      /                                                            \
      \     13  12  11  10   9   8   7   6   5   4   3   2   1     /
       \                                                          /
        \     25  24  23  22  21  20  19  18  17  16  15  14     /
         \______________________________________________________/
 | 
1¹ø ÇÉÀº ½ºÆ®·Îº¸ÀÌ´Ù. (¹Ý´ë ³í¸®ÀÌ´Ù.)
2-9¹ø ÇÉÀº µ¥ÀÌÅÍ ¹ö½ºÀÇ ½ÅÈ£·Î, ¾ö¹ÐÇÏ°Ô ¸»Çϸé OUTB ¸í·É°ú ÇÔ²² º´·Ä Æ÷Æ®ÀÇ ºøÀåÀ¸·Î ¾²ÀÌ´Â ¼ÀÀÌ´Ù.
10¹ø ÇÉÀº ¾Ë¸² ½ÅÈ£(ACK)·Î, Á¦¾îÇÏ´Â °ÍÀÌ´Ù. ±×·¡¼ ¿ì¸®´Â CPU·ÎÀÇ ÀÎÅÍ·´Æ®¸¦ ¸¸µé ¼ö ÀÖ´Ù.
18-25¹ø ÇÉÀº ¹ÙÅÁ(GND)ÀÌ µÇ´Â ªÀº ȸ·ÎÀÌ´Ù.
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| <= in DB25 Cent Name of Reg => out pin pin Signal Bit Function Notes ------ ---- ---- -------- --- ----------------------------- => 1 1 -Strobe C0- º¸³»Áö´Â >0.5 uS ÀÇ ³·Àº ÆÞ½º ¼ÂÆÃ => 2 2 Data 0 D0 ÀǹÌÀÖ´Â ÃÖ¼ÒÇÑÀÇ µ¥ÀÌÅÍ ¼ÂÆÃ => 3 3 Data 1 D1 ... => 4 4 Data 2 D2 ... => 5 5 Data 3 D3 ... => 6 6 Data 4 D4 ... => 7 7 Data 5 D5 ... => 8 8 Data 6 D6 ... => 9 9 Data 7 D7 ÀǹÌÀÖ´Â ÃÖ´ëÇÑÀÇ µ¥ÀÌÅÍ ¼ÂÆÃ <= 10 10 -Ack S6+ IRQ ¿ëÀÎµÈ ÀÌÈÄÀÇ ³·Àº ÆÞ½º ~ 5 uS <= 11 11 +Busy S7- Busy/Offline/Error¸¦ À§ÇÑ ³ôÀº ÆÞ½º <= 12 12 +PaperEnd S5+ ³íÁö ¿ÜÀÇ °ÍÀ» À§ÇÑ ³ôÀº ÆÞ½º <= 13 13 +SelectIn S4+ ÇÁ¸°Å͸¦ À§ÇÑ ³ôÀº ÆÞ½º => 14 14 -AutoFd C1- ÇÑ °¡´Ú¿¡¼ÀÇ ÀÚµ¿¹ÝÀÀÀ» À§ÇÑ ³·Àº ÆÞ½º ¼ÂÆÃ <= 15 32 -Error S3+ Error/Offline/PaperEnd¸¦ À§ÇÑ ³·Àº ÆÞ½º => 16 31 -Init C2+ init¿¡ ´ëÇÑ > 50uS ÀÇ ³·Àº ÆÞ½º => 17 36 -Select C3- ÁöÁ¤µÈ ÇÁ¸°Å͸¦ À§ÇÑ ³·Àº ÆÞ½º ¼ÂÆÃ == 18-25 19-30, Ground | 
°¡Àå °£´ÜÇÑ È¸·Î´Â ´ÙÀ½°ú °°ÀÌ ±¸¼ºµÇ¾î ÀÖ´Ù.:
| 
                             Vcc
                              |
                              +------+
                              |    __|__
                            Relay   /^\  Diode 1N4002
                             Coil  /---\
                              |      |
                              +------+
                              |
                           | / 
                 4.7K    B |/  C
parallel port >-\/\/\/\/---|        NPN Transistor: BC547A or 2N2222A
data pi                    |\  E
                           | V
                             |
parallel port >--------------+
ground pin                   |
                          Ground | 
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°£´ÜÇÑ È¸·Î¸¦ ¿øÇÒ »ÓÀ̶ó¸é, ÀϹÝÀûÀÎ ±â´ÉÀÇ SC141D¿Í ºñ½ÁÇÑ TRIACÀÎ ¸ðÅä·Î¶ó¿¡¼ ³ª¿Â Æ®¸®¾Ç µå¶óÀ̹ö MOC301[012]¸¦ »ç¿ëÇÒ ¼ö ÀÖ´Ù. À̰ÍÀº ´ç½ÅÀÌ ¿©ºÐÀÇ ÆÄ¿ö ¼ÇöóÀ̸¦ »ç¿ëÇÏÁö ¾Ê´Â´Ù¸é ¸ðÇèÀûÀÎ ÀÏÀÌ´Ù.
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| 
        270     1 +-------+ 6    180
  +5v -VAVAVA-----+       +----VAVAVA-----+-------------- Line Hot
                2 |  MOC  |               |
  TTL in ---------+ 3012  +nc            VA  SC141D
                  |       | 4           / |
                nc+       +------------/  |
                  +-------+               +----\/\/\/---- Line Neutral
                                                LOAD | 
220 º¼Æ®¿¡¼ »ç¿ëÇÒ »ý°¢À̶ó¸é, 3021À» ÀÔ¼öÇϵµ·Ï ÇÏÀÚ. ¹ÝÀÀ ·Îµå´Â Motorola Application Note AN-780¸¦ º¸¸é ¾Ë ¼ö ÀÖµíÀÌ Äܵ§¼ ¹ÙÀÌÆÐ½º¿Í ¿¬°áµÇ´Â °ÍÀÌ º¸ÅëÀÌ´Ù. Ä¿ÇǸӽÅÀº ÀúÇ× ·Îµå¸¦ »ç¿ëÇÏÁö ¸ðÅÍ¿Í °°Àº ¹ÝÀÀÀ» »ç¿ëÇÏÁö ¾ÊÁö¸¸, ´ç½ÅÀÇ °ÍÀÌ ±×·¸°Ô ÇÒÁö ¶Ç ´©°¡ ¾Ë°Ú´Â°¡.
| +5VDC
|    180                      180            2.2k
+---/\/\/\----+-----+   +----/\/\/-+--/\/\/\---+-------> 120V
              |    1|   |6         |           |         Hot
              |    +=====+         |           | MT1
              |    | MC  | TRIAC   |          +-+
              |    | 3032| Driver  |        G | | TRIAC
              |    +=====+         |         /| |
              \    2|   |4         |        / +-+
       2N3904  |----+   |          |        |  | MT2
              /     |   +--------- | -------+  |
             V      \              |        |  |
             |      /              |        \  |
             |      \ 43    .01u  ---   10k /  |
             |      /       500V  ---       \  |
             |      |              |        /  |
             +------+              |        |  |            Neutral
             |                     +--------+--+---o    o--> 120V
             /                                      load
 >-/\/\--|  2N3904
             \
              V
              |
             ---
            ///
220V¸¦ À§ÇØ ·¹Áö½ºÅ͸¦ º¯È¯ÇÒ ¼ö ÀÖ´Ù. | 
ȸ·Î ¼³¸í :
MC3032Àº TRIACÀÇ ±¤À½ÇâÀý¿¬Ã¼ÀÌ´Ù. 180 ¿ÈÀÇ ÀúÇױ⸦ ±¤À½ÇâÀý¿¬Ã¼ÀÇ LED À̹ÌÅÍ¿¡ ÀϹÝÀûÀ¸·Î ¸ÂÃß¾î Á¶ÀýÇÑ´Ù. ÇÊ¿äÇÏ´Ù¸é ÀúÇ×±âÀÇ °ªÀ» ¹Ù²Û´Ù. (e.g., 15 mA).
·Îµå ¾øÀÌ ½ÇÇèÇÒ ¼ö´Â ¾ø´Ù´Â °ÍÀ» ÀØÁö ¸»ÀÚ. TRIACÀº AC Àü¾Ð°ú ¿¬°áµÇÁö ¾ÊÀ¸¸é ÀÛµ¿µÇÁö ¾ÊÀ¸¸ç, AC ¿Í ·Îµå ¾øÀÌ´Â ´Ü¼øÇÑ ½ÇÇèµµ ÇÒ ¼ö ¾ø´Ù. 500 º¼Æ®¿¡ ÃÖ°í .01ÀÇ ¼¼¾×ÀÌ ºÙ´Â´Ù´Â °Íµµ.