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impedance impossible

Posted: Tue Oct 30, 2012 4:31 pm
by John
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

Re: impedance impossible

Posted: Sun Nov 04, 2012 3:43 pm
by fabelizer
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