Questions tagged [esd]
ElectroStatic Discharge, it's caused by accumulation of electrostatic charge as a result of rubbing, and can damage semiconductor devices like integrated circuits.
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Metal chassis grounding with wall wart supply, ESD test failed
We're building a device which takes its input power from a 12VDC wall wart PSU, and has a metal chassis. We just passed preliminary EMC/EMI test, but in the ESD test an 8kV jolt to the chassis killed ...
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ESD on two different materials
I am conducting ESD testing on two types of materials with a setup that closely follows the 61000-4-2 standard. We have incorporated both isolation material and a ground plane into our setup.
When I ...
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Is the blue Weller WECP-20 ESD safe? [closed]
There are two Weller WECP-20 soldering stations. One blue and one black.
The black one has a label "ESD SAFE" and the blue have no ESD label at all. But is the blue Weller WECP-20 still ESD ...
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SPI device stops working when integrating Schmitt triggers and ESD diodes
I am integrating a BME680 temperature, pressure and humidity sensor using SPI.
When I only use 33 Ohms series resistors, the system works fine. However, when adding Schmitt triggers (NL27WZ17DFT2G), ...
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ESD knocking out PHY on device with unisolated POE
I inherited this design, one problem I am having is ESD on the chassis knocks out the PHY, sometimes it can't even be reset via software. I am curious if anyone can spot any glaring errors with the ...
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Questions regarding TVS-diodes and grounding
I am currently working with solutions to pass the ESD-requirements for EMC. I have used TVS (ESD)-diodes in the past to good result, but never really understood exactly why they work. Sadly, this is ...
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Can I mitigate risk ESD to a sensitive device with small insulating panels?
I have an electrostatic-sensitive device held in an aluminum block. It has to be aluminum for temperature control. I recently destroyed said device by touching the aluminum block on a low-humidity day....
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Optocoupled Input (3..24V) overcurrent/ESD Protection
I'm designing relatively wide voltage range (3..24V) isolated input for reading the push-pull output state. Input source is going to be from a water counter, some 3-phase motor controllers, water ...
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Medical device on patient's bed..Cannot earth the Chassis..How to provide ESD protection?
We are developing a medical device, which will sit on patient's bed. So, the medical device chassis can't be connected to earth. The powersupply of the device is isolated (2MOPP and 2 MOOP), medical ...
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Need USB C cable / connector insulation voltage....and ESD on shield, will impact the internal signals
Any one know how much voltage the standard USB C cable insulation can withstand?..Also want to know shield to internal conductor insulation..If I apply ESD on the connector shield, will it impact the ...
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Tie all unused GPIO to GND?
Recently, during a discussion with a senior electronics engineer on an industrial project that operates at 48V and is housed within a metallic casing, a point of contention arose regarding ESD ...
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TVS Diode current flow at breakdown
This was a question asked to us by our client.The question is
'We have a TVS diode with a break down voltage of 31V.When a pulse of amplitude 31.7V and a duration of 100ms second is applied the diode ...
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Grounding ESD Table
I work in a manufacturing plant and we are setting up new ESD benches. Essentially, the table is grounded to the ceiling of the building and then multiple work benches are connected to that bench with ...
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Balancing high voltage and ESD safety for a work bench [closed]
I own various large stainless steel benches which I'm using to sit heavy equipment (200kg+ per bench). Some of this equipment will need new electronic components i'll have to wire up, such as 120vac ...
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Can air itself be theoretically considered as a (very poor) wireless ESD grounding strap?
There are many kinds of questionable ESD wriststraps available which
claim to provide ESD protection "wirelessly". When asked about how
exactly they work, they cite dubious claims about ...
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