Meters and Electrical Measurements
MULTIMETERS
While there are many specialized measuring instruments, routine measurement of Volts, Amps, Ohms, and their fractions, is conveniently done with a multimeter, ranging in value from twenty dollars for a pocket meter, up to several hundred dollars for a portable multimeter of high accuracy.
The choice of a digital or analog meter depends on the functions being measured, and to some extent on the accuracy required. AC volts and amps ranges should read as close as possible to true RMS, a waveform related convention detailed in Chapter 3, as the accuracy of calculations depends on initial measurements, especially calculations like watts where the voltage measured will be squared, and where ...
Get Back to Basics Audio now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
