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Old 24th July 2012, 09:34 PM   #1
Corpius is offline Corpius  Netherlands
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Default Power sensor/detector


(Not sure where this topic belongs, but because it is power supply related I posted it here)

Is there a simple way to indicate if there is any additional power (current or Watts) used by my power amplifier?

I want to use a arduino or similar to detect if there is any power used other then when it is ON but no music is playing. If there is no additional power used for about 20 minutes I want the arduino to switch OFF the power using a power relay.

I was thinking of a easy to use hall-effect sensor next to the AC or DC power lines so the arduino can be isolated from the rest of the amplifier, but I'm not sure if it will be suitable for this.
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