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The knowledge about PTC
How much do you know about the curling iron or hair straightener you use every day? Are you worried about runaway temperatures damaging your hair? Don't worry, today let me share the types of heating elements for household modeling tools for you.
There are three commonly used heating elements of general curling iron, including MCH, PTC and heating film.Today I will introduce to you the most commonly used heating element PTC for curling irons and electric irons.
PTC indicates the Positive Temperature Coefficient Thermistor, or PTC thermistor for short. PTC thermistor is a typical semiconductor resistance sensitive to temperature. When the temperature exceeds a certain temperature (Curie temperature), its resistance value increases with the increase of temperature in a step shape.
Resistance value will increase sharply with the rise of temperature, PTC heating, current is relatively sharply reduced, heat dissipation and heat balance, constant temperature. No matter how the voltage changes, the temperature changes are very small. The maximum temperature of the PTC surface varies from 80-300°C / 175-570°F.