Voltmeter, Middlebridge.

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simmit
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Voltmeter, Middlebridge.

Post by simmit » Wed Nov 15, 2017 10:00 pm

Voltmeter temperamental! Anyone have a spare one taking up too much room?



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Voltmeter, Middlebridge.

Post by Will Anderson » Wed Nov 15, 2017 10:18 pm

Try HERE or HERE Hope that helps. :D


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Voltmeter, Middlebridge.

Post by simmit » Sat Nov 18, 2017 12:12 pm

Will Anderson wrote:
Wed Nov 15, 2017 10:18 pm
Try HERE or HERE Hope that helps. :D
Hi Will.
Thanks for links.
First link is good and found same outfit actually sells on UK Ebay at £29.99 inc post, which seems good price. Comes in from Latvia which is EU country so ought be safe!
Before ordering shall check to see if it is really a faulty gauge or just dodgy wiring (alternator has checked out OK).

Cheers



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Old and Slow
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Voltmeter, Middlebridge.

Post by Old and Slow » Sat Nov 18, 2017 6:47 pm

I rebuilt a voltmeter, they have two slots in the back so everything is adjustable! :shock:
If it is the same type as mine it works on the "heating a bimetallic strip" principle, so the delay between voltages changing and the needle responding is about 30 seconds.
I set mine up on the bench using a variable output power supply, the wires inside are quite fine.
Good luck.


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Voltmeter, Middlebridge.

Post by philhoward » Sat Nov 18, 2017 6:59 pm

I think these are VDO moving coil meters, rather than bimetallic like the Smiths ones?


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Voltmeter, Middlebridge.

Post by simmit » Sat Nov 18, 2017 7:48 pm

philhoward wrote:
Sat Nov 18, 2017 6:59 pm
I think these are VDO moving coil meters, rather than bimetallic like the Smiths ones?
Certainly it's VDO and I'll take your word Phil that it's moving coil.
Unfortunately the ones on ebay have red needles and I need white to match other instruments.



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Voltmeter, Middlebridge.

Post by Roger Pennington » Sat Nov 18, 2017 8:51 pm

Presumably should be fairly easy to confirm which type it is, as I would have thought a moving coil meter should respond much more quickly to inputs than the relatively sluggish bimetallic ones?

In fact that does make me wonder slightly, when you say
simmit wrote:
Wed Nov 15, 2017 10:00 pm
Voltmeter temperamental!
is it possible that it's responding to fluctuations elsewhere which might have been smoothed-over by the usual type?


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