Block Diagram of Digital Multimeter or DMM | New Topic

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In this note, we are going to learn about Block Diagram of Digital Multimeter or DMM. Welcome to Diploma to Degree, an ultimate solution for diploma and degree engineering notes.

Author Name: Arun Paul.   

Block Diagram of Digital Multimeter or DMM - diploma to degree

What is Digital Multimeter or DMM?

A digital multimeter (DMM) is an electrical device that measures voltage (AC/DC), current, and resistance. It replaces traditional analog meters by offering accurate readings on a digital display. DMMs are widely used in the electrical and electronic industries for troubleshooting, testing, and repairing circuits.

Explain the Block Diagram of Digital Multimeter or DMM

Here's the Working of DMM or Digital Multimeter Explanation - 

  • Input Section: Input Section: The input terminals are used to connect test leads that measure voltage, current, and resistance. The input section has a shunt for measuring current and a switch for selecting AC, DC, or resistance measurements.
  • AC Attenuator: AC Attenuator: When measuring AC voltage, the AC Attenuator reduces the high voltage to a level appropriate for processing. This ensures that the circuit components can safely handle the voltage.
  • AC Converter: Before proceeding with any further processing, the AC Converter transforms the AC voltage signal to a DC signal. This is significant since digital circuits require DC signals.
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