Page 290 - CITS - Electronic Mechanic - TT - 2024
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ELECTRONICS MECHANIC - CITS
(a) when the iron is at normal temperature (b) When the iron becomes too hot
As far as the circuit remains open, the temperature of the iron continues to reduce, then the strip goes back to its
original position and current begins to flow again. This cycle continues until the power supply is being switched off
from the main electricity source. This is the main reason why your iron tends to power on and off on its own when
connected to electric source.
8 Capacitor:The thermostat helps in maintaining the temperature within limits. But frequent making and breaking
of circuit damages the contact points and it may also result in interference with radio reception. To avoid this,
a capacitor of certain range is connected across the two contact points.
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CITS : E & H - Electronics Mechanic - Lesson 160 - 179
