[Diy_efi] Measuring Pulse Width/Duty Cycle of an Injector

[Mike]

At 01:52 AM 24/05/05, you wrote:
>Everybody seems to be making this complicated, just connect the diode of an optical isolator with a current limiting resistor across the injector (between the 12v supply and the driver for a GM type) and use the signal developed by the transistor, should be nice and clean low when injector on and high when injector off.

Exactly and use a bipolar opto so polarity isnt a problem etc

Mike





>-- 
>Robert W. Hughes (Bob)
>BackYard Engineering
>29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
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Regards from


Mike Massen
Perth, Western Australia
VL Commodore Fuse Rail that wont warp or melt !
http://niche.iinet.net.au