[Diy_efi] Time delay relay?

[bcroe at juno.com]

The info you need to do some design, is a "load line" for 
the lead coming to the switch.  This could be a single line 
on a graph, or perhaps one with a knee.  

To get some info, measure a few points.  First measure 
the voltage with the wire open circuit.  Then put a 10 ohm 
resistor to grd and measure the voltage.  Try a 100 ohm.  
The idea is to find spots with voltages spread along the 
space between zero and maximum voltage.

For each measurement, you have a voltage and a current. 
Calculated current is voltage measured divided by the resistance 
used.  Make a plot of voltage vs current, and now we can 
better access what is needed.

Bruce Roe

24 Dec 2002 "Derek" <derek_obanion at yahoo.com> writes:
> Mike, what kind of things should I ask of the ECU designers 
> about the input circuit so that you have the info you need to 
> tell me how to make it work?

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