SimSurfing Series_09 | PTC thermistor action simulator

Latest update time：2023-06-28

Reads：

Tailor-made for engineers

Online design assistance software

PTC thermistor (positive temperature coefficient thermistor) is a device whose resistance increases as the temperature increases. It can realize temperature detection and circuit current limiting. The product is used in overcurrent protection and overheating protection. and surge current suppression.

The above figure shows that when the operating temperature is between room temperature (25°C) and the Curie point, the resistance value of PTC is basically fixed. After the temperature exceeds the Curie point, its resistance value rises sharply. This feature can be used to detect whether the circuit is overheated, and the PTC can act like a current fuse to interrupt the circuit when the circuit is abnormal .

The PTC thermistor action simulator in SimSurfing can simulate the output voltage-temperature characteristics of the positive temperature coefficient (PTC) thermistor and the ground circuit of the resistor, helping engineers easily understand the output characteristics under the circuit configuration and choose appropriate electronics. components.

SimSurfing auxiliary software

PTC thermistor action simulator

The steps are very simple

first step

Select circuit conditions and model:

Step 2

Click the "Start Simulation" button:

third step

Plot the characteristics of a selected positive temperature coefficient (PTC) thermistor circuit:

Readers can download the PTC thermistor action simulator operating manual to learn more detailed usage.

Go and try it!

Click on the picture to enter the tool page

Tips: It is recommended to use SimSurfing software in a computer browser

This series will introduce in detail the functions of Murata's free online design assistance software SimSurfing and how to use each tool. It will also provide tool manual downloads and videos introducing tool operation. We will also introduce you to SimSurfing application cases and related technical articles. stay tuned!

END

About Murata

Murata Manufacturing Co., Ltd. is a global leader in the design, manufacturing and sales of ceramic-based passive electronic components and solutions, communication modules and power modules. Murata is committed to developing advanced electronic materials and leading multi-functional and high-density modules. The company's employees and manufacturing facilities are located around the world.

Business Consulting