What are Electrician Measurement Categories CAT I, CAT II, CAT III, CATIV? Electrical test measurement tools will be assigned to 4 different designations from I - IV. These categories can be confusing;...
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Why does my Multimeter not go to zero in DC/AC volts mode? For a digital multimeter, it's normal that the voltage readings change while the probes are not hooked up to anything. This is due to the high input...
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For a true-rms ac multimeter, such as the UNI-T UT71E or UT233 clamp meter, it will not zero and should not be zeroed. Most of these true-rms type multimeters have a minimum ac voltage and current level...
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Basic Principles A Laser Distance Meter sends a pulse of laser light to the target and measures the time it takes for the reflection to return. The meter measures the time between those two events, and...
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How to Solder Sub C batteries and Tabs Preparing the soldering iron:•It’s very important to polish the battery surface (top and bottom) with a fine sand paper before soldering. Remove all grease and oxide....
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