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Optical Pinball Plunger Circuit for MAME machine?

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zerax:
Here is my circuit board design, its based upon inverting comparator with hysteresis. The board is USB powered  ;D

Jumper1
Mode_1 = Analog output
Mode_2 = Digital output

Jumper 2
Mode_1 = Signal output => positive
Mode_2 = Signal output => negative

Circuit Schematic: http://forum.arcadecontrols.com/index.php?action=dlattach;topic=116264.0;attach=178963

All parts can be ordered from Elfa Distrelec https://www.elfaelectronics.com

Part list:
IC:     Comparator 2x DIL-8, LM393N/NOPB, https://www.elfaelectronics.com/elfa3~ex_en/elfa/init.do?item=73-292-04&toc=0
OS:    OPB 745W, https://www.elfaelectronics.com/elfa3~ex_en/elfa/init.do?item=75-342-82&toc=0
C1:    10 uF  25V Electrolytic Capacitor
R1:    220 Ohm 0.6 Watt Resistor
R2:    1k Ohm 0.6 Watt Resistor
R3:    220 Ohm 0.6 Watt Resistor
R4:    3k Ohm 0.6 Watt Resistor   
R5:    1M Ohm 0.6 Watt Resistor
R6:    1M Ohm 0.6 Watt Resistor
R7:    3k Ohm 0.6 Watt Resistor
R8:    1M Ohm 0.6 Watt Resistor
R9:    1M Ohm 0.6 Watt Resistor
R10:  1M Ohm 0.6 Watt Resistor
R11:  1M Ohm 0.6 Watt Resistor
LED1: 5V Green LED

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