Is it practical to modify an analog panel mounted voltmeter such as this one?
What I'm looking for it to get the full deflection (or close to it) at 5V DC instead of at 300V AC. I like the design (and price) of this one and I'm unable to find something similar looking for the comparable cost with 0-5V range.
I'm not particularly bothered by the loss of precision my modification would cause, since the intended application is an analog gauge for a simulator cockpit in a game. I'd be controlling the voltmeter with a PWM through a low pass filter and can tweak the output and the background graphics as needed. I have never taken apart anything similar, so I'm not sure what the insides look like. My local electronics store stocks some ugly ones, but the price is a kidney and a firstborn and I'm not really that curious.
Are my hopes that the range of the meter is determined by some resistor and that the needle coil is the same for all ranges grounded? Is it feasible to make a modification as described above?