[sdiy] synth V meter

[Fernando de Izuzquiza]

Hi list,

I'd like to have a meter to see voltages on the synth (a la AKS)
My idea is to have 3 fixed scales switchable: +/-20V, +/-10V and +/-5V 
(+-10V will be the most used, but the others can be useful too)
It would be nice to have another switch so you can use the whole scale 
to measure positive voltages only with more definition. At least on the 
+/-10V scale.

Can someone point me to an schematic please? I know is not a difficult 
circuit but I just can't design it.

I'm talking about a needle meter implementation, so I also need to know 
what kind of meter to buy for this purpose (i.e.  "0 to 100mV meter", 
or "1 to 300mA meter"... etc)
I will design and print the scale on paper and substitute the one that 
comes with the meter. In this case 4 scales should be printed: -20 to 
+20, -10 to +10, -5 to +5 and 0 to 10V. Or at least -10 to +10 and 0 to 
10V, wich may be much clearer...

Thank you very much in advance.

Fernando


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Fernando de Izuzquiza
~ production sound recordist ~