Page 205 - Electronic Mechanic - TP - Volume - 2

ELECTRONICS MECHANIC - CITS

EXERCISE 171: Test Various Components Of Electric Rice

Cooker, Controls And Trace The Circuit

And Rectify The Simulated Faults

Objectives

At the end of this exercise you shall be able to:
• to identify all part the Electric rice cooker
• to identify faulty parts of the electric rice cooker
• to trace the faulty parts and replace it.

Requirements

Tools/ Equipments/ Instruments
• Multimeter - 1 No. • Soldering Iron and Solder Wire - 1 No.
• Screwdriver Set - 1 No. • Circuit Diagram of the Rice
• Thermostat Limiter Sensor - 1 No. Cooker - 1 No.
• Fuses - 1 No. • Insulation Tape - 1 No.
• Wire Stripper/Cutter - 1 No.

Procedure

Theory

Understanding Components
A rice cooker typically consists of a heating element, temperature sensor, and control circuit. The heating element
provides the heat required for cooking, the temperature sensor monitors the temperature inside the cooker, and
the control circuit regulates the power supply to the heating element based on the temperature sensor’s readings.

Testing Components

Each component can be tested individually. For instance, the heating element can be tested for resistance using
a multimeter. If the resistance is within the specified range, the element is functioning correctly. The temperature
sensor (usually a thermistor) can also be tested using a multimeter by checking its resistance at different
temperatures.

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CITS : E & H - Electronics Mechanic - Exercise 171