Self-resettable Polymer PTC Sensors for Automotive DC Motor Protection
1999-01-1042
03/01/1999
- Event
- Content
- There has been an increasing interest in developing a reliable sensor to guard automotive DC motors from an unexpected current surge. We have developed self-resettable positive temperature coefficient (PTC) sensors from two polymer PTC material systems for this purpose. One is a polyolefin based conductive material which provides a switch temperature of around 125°C. The other is a polyamide based material with a higher switch temperature of 165°C for applications where ambient temperature is typically higher. Presented herein are operation principles and material PTC characteristics of the newly developed self-resettable protection sensors. Performance of these sensors is also discussed.
- Pages
- 7
- Citation
- Zhao, L., West, J., and Khadkikar, P., "Self-resettable Polymer PTC Sensors for Automotive DC Motor Protection," SAE Technical Paper 1999-01-1042, 1999, https://doi.org/10.4271/1999-01-1042.