Digital meter

Definition

A digital meter is an electronic device used to measure and display electrical quantities such as voltage, current, and resistance with high accuracy. It uses digital circuits to convert analog signals into a readable numerical format.

5 Must Know Facts For Your Next Test

1. Digital meters provide more accurate readings compared to analog meters due to their higher resolution and precision.
2. They typically have an LCD or LED display that shows the measured value in numerical form.
3. Digital meters often include features such as auto-ranging, which automatically selects the appropriate measurement range for the input signal.
4. These meters can measure multiple types of electrical quantities, including AC/DC voltage, AC/DC current, resistance, capacitance, and frequency.
5. Safety features in digital meters often include overload protection and insulated probes to prevent electric shock.

Review Questions

• What are the advantages of using a digital meter over an analog meter?
• How does a digital meter ensure accuracy in its readings?
• What safety features are commonly found in digital meters?

Related terms

Analog Meter: An instrument that measures electrical quantities using a moving needle on a dial scale.

Auto-ranging: A feature in digital meters that automatically selects the correct measurement range for the input signal.

Overload Protection: A safety feature that prevents damage to the meter by stopping excessive current or voltage from passing through it.