Innovate-motorsports ST-12 Bedienungsanleitung PDF herunterladen (Seite 22)

As one can see, the reference pulse created would have a positive edge.

5.4.1 Making your own optical reference pulse sensor

The device to be used is a Fairchild reflective optical sensor type QRC1133. This device contains a

infrared LED to shine an infrared light beam on a mark on the balancer or flywheel and also contains a

photodiode to detect the reflected light. The device can be ordered from:

www.digikey.com

Part Number QRC-1133-ND.

This device looks like this:

To use it you also need two resistors (1/4W). One resistor is 330 Ohm, the other 3.3 kOhm. The hookup

schematic to be used is this:

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Innovate-motorsports ST-12 Bedienungsanleitung Seite 22