Questions tagged [stress-testing]

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1answer
105 views

How to test a capacitor?

I've got a big 560 uF, 400 V capacitor and I've tested it with a meter and the capacitance is within spec, same the ESR and it has a vloss of 0.8%. So all seems fine but then I came across this video ...
15
votes
3answers
286 views

Puff of smoke in air. 3 different PCBs. PCB has ghosts?

Yes, that is a haiku.  (EDIT: fixed it... it is now actually a Haiku) No I'm not smiling. I'm doing some standard testing; seeing what happens when one of the two power rails gets shorted to GND on ...
2
votes
1answer
134 views

MOSFET Vgs Electrical OverStress [closed]

I have a design is that over-stressing (EOS) a PFET's (PMDT670UPE,115) rated Vgs by 50% (Vgs -12V, limit is -8V), I want to consider PWM'ing this part with 50% duty cycle in hopes of increasing the ...
0
votes
4answers
123 views

Stress testing a PCB’s current handling capability?

I’ve produced a simple unregulated power supply PCB, consisting of: AC input terminals Fuse 4 rectifier diodes Filter/smoothing capacitors DC output terminals Only when the PCBs arrived did I get ...
2
votes
0answers
84 views

IC package reliability with physical stress

One of the ICs for my design comes in LQFP, TSSOP, QFN and even WLCSP packages. I don't care about the footprint, and the only thing that I want to maximize with the package choice is reliability ...
1
vote
2answers
109 views

How to maximize microcontroller temperature?

I need to test how hot a specific microcontroller can get in different situations. The goal is to have the microcontroller heat up as much as possible just by using it. I was thinking I'd need to ...
3
votes
1answer
930 views

Switching RJ45 with relays

So I am setting up an automated test environment for an electronic product and one of my needs is to simulate a user pulling the cable from the product. Since only 4 wires of the RJ45(T-568B) cable ...
2
votes
3answers
2k views

How to test op amp stability?

I've got a circuit I'm developing using an op amp to drive a power MOSFET for an electronic load: I'd like to test it for stability, but I don't have enough experience to know what perturbations are ...
3
votes
1answer
615 views

How to automatically test the audio quality of a telephone line that randomly goes bad?

I am a computer scientist and I'm working as sysadmin of a small firm where I've been managing also the telephone system that my predecessor put in place. Albeit I don't really have the skill set ...
1
vote
2answers
329 views

Generate 10A for stress testing

How could I, a cheapskate hobbyist, generate large currents around 8–10 Amps to run through a short circuit? That is, the objective is to stress test a very low-resistance circuit going ...