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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Did I kill my STM?
I have (had?) an STM32F429ZI. I was working with the ADC on PC0 and due to a hardware malfunction, 12V ran through the pin when the maximum voltage an ADC pin supports is 3V. Since then, whenever I ...
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MOSFET driver blows out in half-bridge DC motor PWM controller
EDIT: I've redone the MOSFET circuit diagram; it now represents what my actual layout is. I wanted to spare myself redrawing the circuit but ended up confusing everything, I hope it's clearer now!
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Help with FBL Z803 chip identification
I have a component on my D5 EVO electric gate motor PCB which was shorting both ends to GND. This resulted in the PCB not powering on.
After removing this component the PCB now powers on, but part of ...
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What's causing my buck converter's switching node to oscillate only some of the time?
We got an order of 24 PCBs recently, and one of them doesn't work. I'm trying to track down the point of failure, and it seems to be our 3V regulator circuit:
At ~180ms intervals, the 3V output rail ...
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What could have caused my power supply to fail?
I made a dual +/- 12 V power supply for synthesizer circuits using a schematic by Moritz Klein (image below). The input of the supply is from a 12 VAC transformer.
After soldering the circuit on a ...
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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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Can a surface-mount ceramic capacitor fail partially and intermittently?
My focus is on surface-mount ceramic capacitors. The obvious failure extremes are open and short. Other than these extremes, can the failure be that the effective value of the capacitor is either ...
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relay contact fails (suspect sparking)
I have a relay which is rated for 30 VDC @ 10 A or 28 VDC @ 10 A (which appears on this relay module) and I am running 12 V @ 6 A through the relay and this solenoid.
After a short amount of time (...
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What's the physics behind LEDs wearing out?
Short version: I'm thinking about running LEDs in a potential over-current setup, but with a PWM-based supply. Will the LEDs suffer an early death? Said otherwise, do LED die of overheating, or really ...
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Mitigating FET current spikes in an SMPS buck converter
I'm currently designing an SMPS buck converter that converts 311VDC to 60VDC at 10 Amps maximum load. I'm using ESP32 for the PWM control, and IR2110 for the switching driver. The switch I'm currently ...
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SMPS Regulator keeps blowing
First Time for me posting here.
Recently I decided to perform a recap on an 20 y/o old SMPS, which is used in a digital mixer. The recap went without any complications. I followed the guide I found ...
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Power supply board failure: could it have been cause by a misoriented triac?
I have this power supply board from a Honeywell HPA300 air filter that has a burned out triac (BT3) in this row of 4 side by side triacs (...
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Physics behind component failure
So I understand that high current through a conductor generates heat, and too high heat can melt things or cause components to fail. Short circuits are frequent causes of overcurrent, no?
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Help needed identifying SMD component (capacitor? power switching diode?)
Any help is appreciated!
I though it could be power switching diode but confused with no cathode marking or a capacitor. The device turns on intermittently (1 out 100 reset attempts).
Shape: ...
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Swapping CANH and CANL kills my power converter
I got the first set of these CAN boards I designed and I plugged one into my test setup consisting of a two CAN dev boards as seen below. The first time I plugged my board in I didn't realize I had ...
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