Questions tagged [electrostatic]
The electrostatic tag has no usage guidance.
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Why do birds not fluff up when they land on super grid transmission lines?
I’ve been testing a home brew Van de Graaff generator on my younger sister. When I do that, her long hair fluffs up like that scene in the Pink Panther cartoons when he’s tumble dried. Puff!
Birds, ...
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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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What is happening at the gate of a JFET to cause an electric field?
I am reading "Practical Electronics for Inventers" 4th edition and came across this circuit.
As I understand, for a JFET, current will flow from drain to source for a n-channel (opposite ...
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Verification of Electric Field from Infinite Line Charge
Problem:
I am currently tackling a problem involving the derivation of the electric field \$\textbf{E}\$ at location \$(0,y)\$ induced by an infinite homogeneous line charge \$\lambda\$ (refer to the ...
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Conformal Mapping in Electrostatics: t-plane
In the paper 'Extension of the application of conformal mapping techniques to coplanar lines with finite dimensions' the author uses the t-plane as a intermediate step for calculating the capacitance ...
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Electrostatic danger
At what is humidity the risk of electrostatic damage to electronics significant? Clearly 0% would be most dangerous and 100% would be less dangerous, but what are the risks in between?
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Troubleshooting a homemade Van de Graaff generator
So, I'm trying to build a Van de Graaff generator from household items, but after a lot of tries, I'm still unable to get it working and was hoping someone here could help.
The problem is that no ...
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Spherical capacitor properties
If we consider a spherical capacitor (having an inner conducting ring surrounded by another such conducting ring), how can charge reside on the inner surface since it's surrounded by another conductor?...
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Metal detector discrimination problem
I was experimenting with discriminating metal detector
I'm using TX coil about 28cm diameter, and 0.9mH with 470nF capacitor- pushing about 5Vpp sin wave from a signal generator
The RX coil also about ...
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Protect Arduino components from ESD damage from external input
I have an Arduino Due project that senses voltages through an ADC (ADS1115). The ADS1115 voltage sensor inputs will have intermittent connections. I have already fried my compass module by ESD and am ...
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DIY Van de Graaff generator
I have built a small Van de Graaff generator using items I found around the house, but I am unable to notice any charge accumulation on the dome. I was hoping you could help me troubleshoot the ...
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How to develop an ESD circuit protection
I am trying to solve what seems to be a common issue of the MAX232 chip getting burned by electrostatic interference. To solve this issue alternative chips are available on the market such as the ...
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Electrostatic transfer in wires
See illustration above.
I would like to know what happens if there is a wire between the static in the finger and an ESD senstive IC. What happens to the static in the wire or how does it behave in ...
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Potential static fault on chassis of system
The image attached is to demonstrate the observed behaviour. As the robot nears the push pads to charge, it moves its actuators down to make contact and as the contact is made the internal computer ...
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Why do we subtract horizontal and vertical component of a electric field?
I was solving a question of electrostatic which is: Find the electric field at a distance z above one end of a straight line segment of length L that carries a uniform line large lambda.
My question ...
