Quote:
Originally Posted by funola
The glow plug is a very low impedance device. Even though the voltage output is very low, noise is not an issue as long as you have good connections from the DVM direct to the glow plug electrode and ground (no ground loops). The readings on the DVM are very steady and do not jump around. If noise was an issue, I would expect erratic readings
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I'm guessing steady readings on your voltmeter are probably more to do with the dynamics of the voltmeter rather than the output from the glow plug. As for your comment about noise - I don't go along with that - sorry (but I see little point in butting heads over it!)
So keep up the good work. You are more than a few steps ahead of me on this project - I'm still scrabbling around in the ditch trying to get some equipment...