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How can a metal film resistor increase in value?
How can a metal film resistor increase in value?
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Old 21st August 2019, 09:57 PM   #11
Mark Tillotson is offline Mark Tillotson
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Quote:
Originally Posted by ColinA123 View Post
One possibility, your meter is not accurate at such low R value.

A four-terminal (aka Kelvin) measurement is needed for low-value resistors. I use a bench supply set to 1.0A to drive the resistor and measure the voltage across the resistor with a multimeter, simple and easy for sub-ohm resistors. For range 1 to 10 ohms 0.1A is a safer current to use. Probe the resistor right on its terminals/leads, avoiding the cable resistance.
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Old 22nd August 2019, 01:59 AM   #12
Max Headroom is offline Max Headroom  Australia
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Quote:
Originally Posted by Beemer2 View Post
Dan, You gave me new knowledge......
Glad to help you Ian.
That quote is a little ambiguous, except for Carbon Composition tubular resistors are are an insulating ceramic rod with coating (matrix ?) of conductive material.

Be sure to use a bulb tester.


Dan.
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