ผมแปลยังไม่ค่อยเข้าใจครับ
A "thermometer" is nothing more than simply a device that measures temperature in some way. How it's done is not included in the definition of the word. Since whatever is in your CPU measures the temperature, it's by definition a thermometer.
But the thing that actually does the work in this case, is simply a diode. A diode is an electrical component that lets current flow through in one direction, but not the other. However, even though the diode will let current flow in one direction (called the "forward" direction), there is still a voltage drop. As it turns out, the magnitude of this voltage drop depends on the temperature of the material (and of course some other properties). So a CPU thermometer works by measuring the magnitude of the voltage drop across a silicon diode. The official name for such a thermometer is a silicon bandgap thermometer.
See for more:
http://en.wikipedia.org/wiki/Silicon_bandgap_temperature_sensor
ข้อความด้านบนได้มาจากกระทู้นี้
https://www.reddit.com/r/askscience/comments/2zkvwc/how_is_a_cpus_temperature_measured/
คือสงสัยว่าถ้าใช้การวัดเทียบโดยความต่างศักย์ไฟฟ้า จากประโยคนี้ voltage drop depends on the temperature of the material.
แล้วถ้าเริ่มแรก ในช่วงที่ไม่มี voltage drop .. ไม่มีค่าเปรียบต่าง
อย่างนี้จะรู้ได้ยังไงว่า อุณหภูมิ เท่าไหร่
ช่วยอธิบายการวัดอุณหภูมิของ CPU ด้วย Silicon Diode หน่อยครับ
A "thermometer" is nothing more than simply a device that measures temperature in some way. How it's done is not included in the definition of the word. Since whatever is in your CPU measures the temperature, it's by definition a thermometer.
But the thing that actually does the work in this case, is simply a diode. A diode is an electrical component that lets current flow through in one direction, but not the other. However, even though the diode will let current flow in one direction (called the "forward" direction), there is still a voltage drop. As it turns out, the magnitude of this voltage drop depends on the temperature of the material (and of course some other properties). So a CPU thermometer works by measuring the magnitude of the voltage drop across a silicon diode. The official name for such a thermometer is a silicon bandgap thermometer.
See for more: http://en.wikipedia.org/wiki/Silicon_bandgap_temperature_sensor
ข้อความด้านบนได้มาจากกระทู้นี้
https://www.reddit.com/r/askscience/comments/2zkvwc/how_is_a_cpus_temperature_measured/
คือสงสัยว่าถ้าใช้การวัดเทียบโดยความต่างศักย์ไฟฟ้า จากประโยคนี้ voltage drop depends on the temperature of the material.
แล้วถ้าเริ่มแรก ในช่วงที่ไม่มี voltage drop .. ไม่มีค่าเปรียบต่าง
อย่างนี้จะรู้ได้ยังไงว่า อุณหภูมิ เท่าไหร่