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Identity of the device in the attached photo.

chazzjh

Thread Starter

chazzjh

Joined Sep 28, 2016
6
Can anyone help me identify the device in the attached photo. A student gave me a huge bag of resistors from a lab that his dad worked at that closed and some of these were included. There are no identifying numbers.
upload_2017-5-2_15-0-19.png
 
recklessrog

recklessrog

Joined May 23, 2013
985
Measure the resistance while warming it up with a hair dryer, if it changes significantly, (decreases) then it is a themistor (NTC) Negative temperature coefficient. If on the other hand, the resistance increases, then it is a positive coefficient thermistor (PTC)
 
chazzjh

Thread Starter

chazzjh

Joined Sep 28, 2016
6
It is probably a thermistor. When I hold the top between my fingers the resistance drops from 10K to 7.8K pretty rapidly. Then when I let go it returns to 10K rapidly.

Thanks for the clues!
 
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