Midi-CV part 2

[(Ian A. Vine (phone UK 0171 419 3450))]

Hi,

	this is a circuit I use in a MIDI to PC soundcard interface

                       6N139                --+-- +5v
                       +------+               |
                       |     8|---------------+
	     220R      |      |               |
       4o----/\/\/--+--|2    7|-----+         \
                    |  |      |     /         /
 MIDI IN	    _  |      |     \ 15K0    \ 1K0
              1N914 ^  |      |     /         |
                    |  |      |     |         |
       5o-----------+--|3    6|-----)-----+---+---------> Pin 15 soundcard D15 
                       |      |     |     |
                       |     5|--+  |     | |\     330R
                       +------+  |  |     +-| )0--/\/\/-+
                                 |  |       |/          |
                                 |  |                   V LED
                                 |  |                   -
                                 |  |                   |
                            0v---+--+-------------------+--


        from                    +5v--/\/\/---o4
	Pin 12 
	soundcard D15                    0v--o3   MIDI OUT
	         |\        |\
	>--------| )0------| )0-----/\/\/----o5
                 |/        |/

		74LS14 (supply 0v pin 7, +5V pin 14)

Ian