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Advantages of digital meters over analog meters
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ADVANTAGES OF DIGITAL METERS OVER ANALOG METERS
ANALOG AND DIGITAL METERS.
ANALOG METERS: An instrument which measures and
indicates values by means of a continuous scale within which any value may be specified. Most of the time a pointer is used to indicate readings.
DIGITAL METERS: A digital meter is a device used by
technicians to test and measure electronic circuits. Most of them are
portable, battery-powered units. They show measurements as numbers
and symbols on an electronic display.
WHY ANALOG WAS REPLACED BY DIGITAL METERS?1. Accuracy.2. Robustness.3. It has moving parts. These can get
affected by an accidental drop to floor. 4. It has relatively less input resistance
especially in low voltage ranges such as 3V prone to parallax error.
PARALLAX ERROR.
ADVANTAGES OF DIGITAL METERS
1. Output Display
It is easy to gauge a reading through digital multi-meter since the output is automatically displayed in numbers through a Seven Segment Display.
2. Accuracy
A digital meter takes a precise, computer-generated reading and displays it on the screen.
3. Auto PolarityPlacing the probes into the opposite polarity will result into a negative output.
4. Stable CalibrationWe should only have to calibrate our digital
meter once -- when you first turn it on.5. Current Protection Most digital meters feature protection from
sudden shifts in current.
6. Precision.
7. It can hold the reading in memory .
8. The reading speed is increased as it is easier to read.
9. With the advent of Integrated circuits, the size, cost and power requirements of digital multimeters has been drastically reduced.
10. No moving parts, life will be high.11. Has high resolution: Can detect very small
changes of the order of 0.1% of range.
12.User friendly. A digital meter performs the calculation and
displays the reading. 13. Portable size makes it easy to carry
anywhere.
THANK YOU…