Re: Using a Panel Meter movement


<extremesoundandlight@xxxxxxxxx> wrote in message news:2f70ab98-4775-4ec0-b544-b929c35fca58@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Sep 15, 7:43 am, "Patrick Keenan" <t...@xxxxxxxx> wrote:
Hello All,

I'm trying to sort out how to use an analog, needle-style, coild&spring type
of panel meter movement. I have a couple of samples to play with,
unfortunately I have no infomation about them. On one, the needle rests on
the left, on the other, the in the center - this is actually the one I am
most interested in using.

For clairty this is the kind of device I'm referring to:http://www.process-controls.com/Modtronics/Beede_panel_meters_Magcent...

So I'm looking for a sample circuit that shows me how this sort of movement
is connected and driven, or just what words to use on Google to find such
circuits, and how to figure out details on the samples I have. I'm finding
lots of results on meters except for how to do this.

I'm intending to use this movement to indicate whether a signal is above or
below a given value - if you think of a guitar tuner, that's probably a
helpful example.

Thanks!
Patrick Keenan

use a meter whith known values in a circiut to set your full scale
deflection on your VU meter for what your going to measure

what the application.
what are you tring to measure

=====
Thanks for the reply. For application, think "guitar tuner". What is being measured is an incoming frequency, relative to a specific reference, so the needle rests in the middle and moves right or left. There's a microcontroller involved, so I assume that I'll be converting that incoming frequency to a voltage to run the meter itself. The meter won't be the only display, but I find that for me, the needle movement is the best visual cue.

Do you know of any sample circuits so I can see what sorts of voltages and currents are normally acceptable for this kind of movement, and how they are normally connected? Or a sample data***? These seem harder to find than I expected.

Thanks again,
Patrick Keenan

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