Questions tagged [stress-testing]

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Parameters for BJT spice-model

I need to make a spice model for BJT according to the stress test mode schedule (this is the current density and collector-base voltage). What parameters of the G-P model are responsible for these ...
Alex's user avatar
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1 answer
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How can I verify the operating specification of a PCB? [closed]

I have a couple of PCBs which work with each other: core PCB, middleware PCB and a peripheral PCB. All of them have a voltage and current rating along with protection circuits. What tests can I ...
Varun Dhaka's user avatar
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How I can perform accelerated testing of my PCB board by own?

I am working on a project in which there are system components listed below as module: 8 ultrasonic sensors 12-30 V (Sensor module) 3 DC motors (Drive module) 35 V to 5 V buck converter and a 35 V - 5 ...
user274774's user avatar
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1 answer
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Can an n-channel mosfet gate be held closed for months at a time and still reliably open when Vin falls below threshold?

I made a prototype circuit to detect the loss of individual 12V lithium batteries in a larger parallel bank due to BMS cutoff (12V continuous signal from an individual battery suddenly becomes open ...
VanGogh66's user avatar
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2 votes
3 answers
314 views

Are thermal effects on an FPGA different depending on how it is programmed/configured?

I am currently on the fence in a debate regarding FPGA environmental testing (thermal cycling). The question is, can the same FPGA stressed to the same thermal limits yield different results depending ...
Kierran Purden's user avatar
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4 answers
492 views

Calculation of Junction Temperature

I have a PCB and trying to measure the maximum junction temperatures of the major components in the PCB which in full working mode. For example like Input Diodes, Buck Regulator ICs, Aluminium ...
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9 votes
2 answers
233 views

Looking for a explanation/cause of lithium polymer battery failure

I'm hoping that someone on the EE StackExchange could give me some insight into what is going on with some lithium polymer batteries that I have under test. The question I am trying to answer is: ...
RobGah's user avatar
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1 answer
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What are the general guidelines to conduct a stress test for an assembled PCB to test reliability after fabrication?

I got a PCB fabricated from a board-house. The PCB contains: DC-DC power circuit protection diodes Atmel ATtiny microcontroller LED's USB hub and interface to a RPi I want to conduct a stress test ...
Rohit Garg's user avatar
2 votes
1 answer
622 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 ...
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16 votes
3 answers
492 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 ...
macdonaldtomw's user avatar
2 votes
1 answer
507 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 ...
Andrew Sauter's user avatar
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4 answers
393 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 ...
abza's user avatar
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2 votes
0 answers
417 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 ...
Andriy Makukha's user avatar
1 vote
2 answers
212 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 ...
Tonkel's user avatar
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3 votes
2 answers
3k 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 ...
clds's user avatar
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2 votes
3 answers
5k 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 ...
scanny's user avatar
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3 votes
1 answer
718 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 ...
A. Rama's user avatar
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1 vote
2 answers
576 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 ...
Rennex's user avatar
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