Is it critical for the value of the zener diode as I can only get my hands on a 2.7v jobbie today
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Is it critical for the value of the zener diode as I can only get my hands on a 2.7v jobbie today
No, but a higher voltage zener will mean the potentiometer will be working a bit harder.
Not really, your output voltage will be 0 - 2.7v rather than 0 - 1.5 so trimming it will be slightly more fiddly.Quote:
Originally Posted by AdCNC
I'd set it to zero and connect it up and then bring it up to the voltage you want - this will negate any effects due to the load the ECU puts on the potential divider.
Ahh ok. Well thanks for your help guys I'll try and slap something together today. Cheers :)
Can I ask what car this is for?
It's for a Toyota Corolla Compressor
Well works like a charm on the meter so now to plumb it in.
Hello Mc I have the same situation as AdCNC Had to you still have that schematic you drew up for him if I could get a copy it would same me so much time thank you
Sorry, but I wouldn't even know where to start looking for it, as given the age of this thread, it would have been several computers ago, and wouldn't be the kind of thing I backed up anywhere.Quote:
Originally Posted by BMW911