Questions tagged [component-failure]
For questions about what causes components to fail, how to prevent component failure, and component failure modes (e.g. fail open or fail short).
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NTC Thermistor Failure Over Time
I am using 0402 nominally 10k\$\Omega\$ NTC thermistors that are soldered onto a flex PCB which is then adhered to the point of interest in an Alumina based thermal adhesive.
The thermistors have ...
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Failing to understand and to fix a PWM spindle controller circuit
My CNC controller worked for many hours without trouble. But recently the resistor R5 (red circle) started to melt each time I switch my CNC spindle on, and even at low RPMs. It is 100 ohms, compared ...
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Failure mode of TTL device
A question came up about common failure mode of a transistor. Searching past posts I actually found varying answers, either open or short. Maybe it depends on the application, and I'm missing ...
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Electronic wearing of a printed circuit board?
I was told that electronic components and printed circuit boards have a limited lifetime. This is backed by several questions and answers:
https://www.quora.com/Do-circuit-boards-have-a-useful-life
...
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Capacitor between boost and sw pin
I want to use THis buck regulator and i was wondring what is the function of the capacitor between the Boost and the SW pin ?
And What happen if i choose to not add this capacitor ?
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Identify S447 T0220 component
One component on this board has eluded me. It is marked S447 horizontally at top, the letters MEX down the right an J6 at the bottom. The T logo is stylized with a swooping top. Searching for the ...
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LED lighting that lasts longer than me [closed]
My research has indicated that failure in LED lighting (incandescent replacements) results from failure in the support components rather than the actual LEDS themselves. How can I build and/or modify ...
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LM317 explosion
I was trying to make 1A dummy load using lm317 (didn't intend to use it,just trying!). So, I connected the circuit as shown :
I put 1 ohm resistor as a load and another 1 ohm resistor instead of R1, ...
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Can a relay failure mode be like that?
I was fixing my dishwasher control board, and diagnosed a bad relay. Its coil is still within specifications, but the relay will not close its contacts. It is an easy fix ok, but my question concerns ...
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