Injector resistance.

[Sandy]

Look at the circuit on the EFI332 site for the Peak and Hold injector
driver. If the impedance of the coile is in the 2 ohm range, it typically
is a peak and hold style injector, so you will need a special driver for
them. The higher impeadance injectors, 12ohm or greater, can be driven
directly by the 12 volt system, ie, just a simple on off type of driver.

Sandy

At 01:02 PM 12/15/97 PST, you wrote:
>I do not think that I have burned the injector's coil since before I 
>started fidling I measured the resistance and even then it was 1.9ohms.  
>I have some other small multimoint injectors whose resistance is about 
>15ohms.  These do move a little and make a small sound when I apply 12V.
>So how can I open the injector because I would wish to drive it.
>
>Thanks again
>michael
>>
>>Its a peak and hold injector,  applying 12 V will only work with a
>>saturation,  hopefully you didn't see any smoke while applying the 12 
>V,
>>that would be bad!
>>
>>----------
>>> From: Michael Farrugia <mikefarr at hotmail.com>
>>> To: diy_efi at efi332.eng.ohio-state.edu
>>> Subject: Injector resistance.
>>> Date: Sunday, December 14, 1997 10:10 AM
>>> 
>>> Hello all,
>>> I have been given a Bosch turret which belonged to a Fiat Punto.  My 
>>> friend who gave it to me is certain that the Injector should work.  
>>> However when I apply 12V to it, it does not move or make any sound at 
>>> all.  I'm sure I am applying the right polarity because there are '+' 
>>> and '-' signes to mark the connectors.  I have measured the 
>resistance 
>>> and it reads 1.9 ohms!  Is this low for an injector?  Should I apply 
>12V 
>>> DC or something differnt?
>>> Thanks in advance.
>>> Michael
>
>
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