Out-of-class_ppt for video - v2 1

Pradeep Patil – Flipped Classroom (L1)

DOMAIN : Second Year

TOPIC : Electronic Instrument – Digital Multimeter (DMM)

COURSE : Electronic Instruments and Measurement

AFFILIATION : Walchand College of Engineering , Sangli

TARGET AUDIENCE : Second Year Electronics Engg students

OER_Flipped_Classroom_activity_constructor

2

In-class Activity Design -1 (L1)

1. Recall the need of electronic / digital instrument.2. To draw the Block diagram of Digital MMM and

understand the working of each block and solve the resolution problem.

3. List / write the specifications of DMM.

1. Electronic / Digital instruments & its blocks in block-diagram2. Digital Multimeter (DMM)3. Specifications of DMM

Learning Objective(s) of In-Class Activity:

Key Concept(s) to be covered:

Digital Multimeter (DMM) – Functions

Can measure – 1) DC voltage , 2) AC voltage 3) Current , 4) Resistance

Block diagram of Digital Measurement System

• In digital instrument (DMM) , analog to digital (ADC) is required & parameter is displayed in terms of digits on digital display.

• Input requirement for ADC is dc voltage.

Basic block – ADC ( DC DVM)

Additional blocks – To measure AC voltage - ? To measure current - ? To measure resistance - ?

Basic block – ADC ( DC DVM)

• For 3 and ½ digit display , count will be from 0000 to 1999.

• So , resolution will be -- n = 3 R = 1/ 10 3 = 0.001 Volts