Active Components
Description
PTC Thermistor Working principle:
Motor-starter is a machine that makes use of the PTC pottery current-time feature. When the voltage applied to PTCR, the heavy current begins to pass through, and after certain time, with temperature increasing of the PTCR, resistance value goes up sharply and cause current to fall down rapidly. During this time, ts can change from 0.1s to several seconds. The specific time depends on PTCR’s heating capacity, resistance value,heating dissipation condition, overloaded resistance and operating voltage. When the outer electricity voltage withdrawals, PTCR will become cool and alter to normal resistance. This principle of PTCR is used extensively in household refrigerator and air-conditioner motor-starter and so on.
Advantages:
1. low noise, contactless and long service life
2. can control the current without other controllers
3. small size can be connected to compressors for use directly
4. support most of the circuits loop that compressors need
5. low power consumption
6. high stability,durability and reliability
7. cheap but with many functions
8. quick and powerful starting
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DXM High Technology
thermistor, temperature sensor
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Shenzhen, guangdong
China, 518000
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