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Old 8th March 2006, 01:20 PM   #1
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Default Amp Meter compatible/options?

I would like to incorporate this meter in to my dual chip per channel LM4780 amp. On the front panel.

http://cgi.ebay.com/BLUE-LED-DC-0-20...QQcmdZViewItem

It is rated for 5 volts but tracks up to 20 amperes.
My transformer is rated ar 22 volts 400VA.

What do I need to look for or will a 5v rating work?
I was also considering this one as a second choice!

http://cgi.ebay.com/ebaymotors/ws/eB...RK%3AMEWA%3AIT

Thanks
Dominick
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Old 8th March 2006, 02:34 PM   #2
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What do you want to measure with the meter?
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Old 8th March 2006, 02:45 PM   #3
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With one of these meters, I will measure Amps and with an identical VU meter, I will measure Voltage. Its mostly just for visual effects!

Dominick
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Old 8th March 2006, 02:51 PM   #4
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If you mean amps and volts of output signal, you will get nothing but a jumble on a digital display without some track and hold averageing circuitry. (Just clip an ac volts multimeter across your speaker leads to see what I mean)

If you mean you will monitor your power supply, the current will be a mess (just like above) and the voltage will be pretty boring, depending on how stiff your supply is.
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