Page 72 - Teach Yourself Electricity and Electronics
P. 72

52 Measuring devices





































                               3-7 Simplified drawing of an electrostatic voltmeter.











                                                              3-8 Circuit for using a
                                                                  milliammeter to measure
                                                                  resistance.










               the appropriate voltage. The smallest deviation from the required voltage can cause a
               big error in the meter indication.
                   The scale of an ohmmeter is nonlinear. That is, the graduations are not the same
               everywhere. Values tend to be squashed together towards the “infinity” end of the scale.
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