impedance impossible

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John
Posts: 1
Joined: Tue Oct 30, 2012 4:24 pm

impedance impossible

Post by John » Tue Oct 30, 2012 4:31 pm

Hi I need to read the voltage from a power supply, the datasheet for the power supply states that any digital measuring device needs an input impedance of at least 10M, unfortunately the Digital measuring device I have states that the maximum input impedance is 1M Ohm. What options do I have? Is there a circuit that can increase the input impedance of my measuring device?

Regards

John
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fabelizer
Posts: 8
Joined: Wed Oct 13, 2010 2:41 am

Re: impedance impossible

Post by fabelizer » Sun Nov 04, 2012 3:43 pm

Hi John,
What are you measuring? Can you add a link to the datasheet? I am very surprised that the input of your measuring device is only 1Mohm. What is ist you are measuring with?

-fab
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