1. The uneven bottom of the pot: It is mainly used to increase the heating area of ??the bottom of the pot and make the water boil faster. Secondly, the contact area is reduced when the end is placed, and the contact is more stable.

2. The filament is in a spiral shape: mainly to increase the length of the luminous body while maintaining uniform heating of the luminous body.

3. PTC thermistors are divided into: ceramic PTC thermistors according to their materials: Ceramic PTC thermistors

Organic polymer PTC thermistors

PTC thermistors Resistors are divided according to their uses: PTC thermistors for automatic degaussing

PTC thermistors for delayed start

PTC thermistors for constant temperature heating

PTC thermistor for overcurrent protection

PTC thermistor for overheating protection

PTC thermistor for sensor