Results are out! Find what you need...fast. Get quick advice or join the chat
x

Unlock these great extras with your FREE membership

  • One-on-one advice about results day and Clearing
  • Free access to our personal statement wizard
  • Customise TSR to suit how you want to use it

How do NTC thermistors work?

Announcements Posted on
Rate your uni — help us build a league table based on real student views 19-08-2015
  1. Offline

    ReputationRep:
    Title says it, nowhere really seems to say :s

    Thanks
  2. Offline

    ReputationRep:
    After a quick google, the first result threw out this:

    NTC Thermistor

    Not too hard, was it?
  3. Offline

    A thermistor's operation is a function of the electron-hole pair theory. As the temperature of the semiconductor rises, the electron-hole pair generation increases (due to thermal agitation). Increased electron-hole pairs causes a drop in resistance and a resultant increase in current flow.
    There are two classes of thermistors: positive temperature coefficient (PTC) and negative temperature coefficient (NTC). With NTC, an increase in temperature causes a decrease in thermistor resistance
    With PTC, a relatively small increase in temperature at the switch temperature point causes an extremely large increase in thermistor resistance. A PTC thermistor will have relatively low resistance levels during its ON state and relatively high resistance levels during its OFF state.
    Most thermistors operate on an NTC, although some applications require operation on a PTC.

Reply

Submit reply

Register

Thanks for posting! You just need to create an account in order to submit the post
  1. this can't be left blank
    that username has been taken, please choose another Forgotten your password?
  2. this can't be left blank
    this email is already registered. Forgotten your password?
  3. this can't be left blank

    6 characters or longer with both numbers and letters is safer

  4. this can't be left empty
    your full birthday is required
  1. By joining you agree to our Ts and Cs, privacy policy and site rules

  2. Slide to join now Processing…

Updated: April 16, 2007
TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

Today on TSR

What uni's really like

Chill those freshers fears...

Poll
Would you date a smoker?
x

Looking for some help?

Ask our friendly student community a question

Ask a question now

Or get help from our smart tools and guides

GCSE help A-level help Uni application help Everything else
Quick reply
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.