Balanced Voltmeter (T947E)

Details
Written by: Newton C. Braga

 

This circuit was found in a Radio Craft from May 1945. The circuit has several voltage ranges with an input impedance of 20 M ohms, given by the input resistive network. It can be used with a common analogue multimeter in the 100 uA range.

 

 


 

 

 

 

  

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