Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [harsh-environment]

10 questions
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3 answers

Are there crystals that are tolerant of high pressure?

Are there crystals that are tolerant of high pressure? Or do they all have an open space in their case? A customer wants to use our product in a submarine, immersed in high pressure oil. I thought we'd be OK using SMD crystals, based on this…
Davide Andrea
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Wire for harsh environment

One of the jobs I often have to perform is repairing the infra-red sensing headsets for BattleSports equipment. Basically the headset consists of a pair of IR detectors and red LEDs for indication. They are worn on the head, and connect to the…
Majenko
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Self Contained Temperature Display in Very High Temp Environment

I want to build a temperature sensor + display that will operate in a high temperature environment (routinely 120C, but periodically spiking to 175C, and might be exposed to 350C where it would be required to survive for very long--ie it could fail…
SchroedingersCat
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Opto-coupled EIA-422 receiver (understanding suggested circuits)

I am looking at a standard for communication of marine electronics (NMEA). The standard is electrically essentially EIA-422 but it prescribes opto-coupled differential receiver pins without connection to ground. The differential receiver…
ARF
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Going from PD3 (pollution degree 3) to PD2 using IP54 (ingress protection 54)?

I wonder what is needed to reduce a PD3 (pollution degree 3) environment to PD2? It seems that IP54 housing could do it, but I have not found this clearly written in text (there is some vague mentioning of it in IEC 60664-1 Annex B, attached).…
warpi
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How to choose the right flexible cable for moving parts?

Is there a generally accepted guide to select a cable, which has to withstand certain bending stress? I am looking for something like this: IEC 12345-6 Wire rigidity How many bending cycles between straight wire and a bow with R = 10 x diameter can…
Jonas Stein
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Circuit reliability, especially tin solder, under wide temperature range -40 degree to +85 degree

We are trying to have our Lab product work in industry environment. One key factor we are thinking about is the operating temperature, since we have never done any environment test before. Our circuit consists of MCU, ADC, DAC, Opamps and resistors,…
richieqianle
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Electronics in Diesel

I was wondering if there will be any adverse effect on electronics functionality-wise when it is dipped in diesel and operated. Since diesel is non-conductive, the functioning should not be affected. What other factors should I consider? What is…
aaditpj
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5V tolerant - tolerant to 5V and how many more ? Harsh environnement

There is a lot of questions about this subject... Nevertheless this is not clear to me and clearly I m afraid of putting a signal at the input of a microcontroller which is higher than this supply voltage (ie 3V3). Nevertheless I would really happy…
Jess
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The role of humidity is BSOD and other glitches

For some unknown reason to me hearing aids require dehumidifying. The humidity somehow very significantly interferes with the microphones and other electronics. Daily dehumidifying stops the interference. Does humidity play a role in tablet, phone…
user37675