See what you've driven me to?

[julie at menloparkrandd.com (julie@xxxxxxxxxxxxxxxxxx)]

Allyn, the meters are ameters. a resistor in series (the sensor) limits the current there by moving the meter according to the amperage drawn.
At least thats how the mki and MKII meters work

>-----Original Message-----
>From: Allyn [mailto:amalventano1@xxxxxxx]
>Sent: Monday, October 22, 2007 01:04 PM
>To: roccit_53@xxxxxxxxxxxxxxxxxxxxxxx, scirocco-l@xxxxxxxxxxxx
>Subject: RE: See what you've driven me to?
>
>Cathy,
>
>If you can get me any kind of specs on both ends of what you're trying to connect, I'll whip you up a circuit that interfaces
>between the two. It will likely require a voltage divider of some sort, as opposed to just one resister in series.
>
>Al 
>
>> -----Original Message-----
>> From: C Boyko [mailto:roccit_53@xxxxxxxxxxxxxxxxxxxxxxx] 
>> Sent: Sunday, October 21, 2007 10:13 PM
>> To: scirocco-l@xxxxxxxxxxxx
>> Subject: See what you've driven me to?
>> 
>> Yeah, it's become a geek-fest in my garage. I just got in 
>> from trying to get my dash water temp guage to work. The 
>> problem is the ABA sensor and the MkI gauge don't play nice, 
>> the guage pegs at hot. So I'd tossed in the largest resistor 
>> I had and that pegged it at rest position. Which it never 
>> moved from. So something between nothing and 1000 ohms is 
>> right. So I ask the kid (he's gotta be good for something), 
>> he's got a potentiometer handy, likely from a helicopter. So 
>> here I am after twisting the dial and boiling water to 
>> immerse a spare sensor in, and it's still not perfect, but 
>> I'm closer. 150 ohms seems to be what's called for. Of course 
>> that means adding up about six resistors in series. When I 
>> got the 16V a few years back, I didn't even know how to 
>> disconnect the battery cables. The other projects today were 
>> washing three cars (Bug/Klaus/Mustang, don't ask), getting a 
>> spare engine and tranny into a spot where I didn't keep 
>> knocking my shins on them, and figuring out fitment for 
>> battery relocation and the cutoff switch to go with it. All 
>> the piddly shit takes so much time! It was a beautiful fall 
>> day for it though. Hope you all had good weekends.
>> cathy
>> 
>> 
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