PTC stands for Positive Temperature Coefficient in English, which means positive temperature coefficient. Its resistance increases with temperature.
At the beginning of operation, PTC thermistor has a surge current, which can be seen from its current time characteristics (as shown in Figure 2).
By applying a PTC thermistor to the electronic ballast of energy-saving lamps, the product can be directly connected across the resonant capacitor of the lamp tube without modifying the circuit.
For a specific electronic ballast or energy-saving lamp, the larger the PTC resistance value,
When the starting circuit is a single capacitor, PTC thermistor has a high voltage resistance requirement, usually above 800V;
The engine coolant temperature sensor, also known as the water temperature sensor,
