MAF output signal

peter paul fenske pfenske at direct.ca
Thu Jul 4 07:25:59 GMT 1996


>Hi all,
>
>I am working on a frequency limiting circuit that will intercept the output
chomp.........
>the limit freq. regardless of how high the input freq. goes beyond it.
>>
>>Well first off use am LM2907 to convert the freq to a voltage.
>>The 2907 is scalable to freq. Use the voltage that corresponds
>>to wot max load to switch a comparator. Use the comparator to
>>switch to signal output to a 555 with you steady state freq 
>>signal.
>>Of course if you are one of the gurus the HC11 can be 
>>easily programmed to do the JOB. A EVB could do it.
>>Of course EVB costs bucks so analog ok.
>>
>What is the typical freq. output range vs. air flow for these sensors.  The
muunnnchhheee.........
>>Best way to do this is with a freq cntr DVM wired up so your 
>>co pilot can take measurements while you torture car. You explain
>>to the genedarme what are you up to.. IN the name of science and EFI.
>>
>Thanks in advance,
>
>Mark Josewski
>Applications Eng.
>
>Have a nice day: the peter
>




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