Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [grounding]

Problems related to the connection of circuits to ground or earth references. Can affect safety, accuracy, reliability and interfacing.

1238 questions
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Grounding in space

I'm working on a project that will be launched inside a Blue Origin New Shepard rocket and need to know the details of how our experiment will be grounded. The experiment will have a 5 V USB 3.0 power supply and will be powering a Raspberry Pi Zero…
user3597934
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Why is this laptop adapter grounded?

This adapter is clearly not capable of delivering a null, a power and a ground to the laptop because the connector only has two surfaces. The adapter itself is plastic. So why is it grounded? (Note that this is not specific to this particular brand…
chx
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How are airplanes grounded?

What are all the wire shields grounded to on a system that has no contact with earth, like an airplane? I found this document that says all shields and chassis and other grounds should be connected at a single point next to the main power source…
Arthur Tarasov
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Can the ocean be used as ground?

When grounding a tall tower in a rocky island, can we just throw a couple naked cables in the sea? If not, why not? Please provide real-world examples if known.
Emilio M Bumachar
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Sending ground along with digital connections between boards

I have been wondering for quite a while whether it's good practice when connecting two boards together (powered from the same power supply, although each has its own regulator) to send ground connections along with the digital connections. For…
Matt
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long current return path in star topology of grounding?

I'm designing a system with a MCU board and multiple peripheral boards. I chose a star topology for grounding, in other words, the GND pins in each board is connected to the power source. However, I'm not sure if this is good regarding the signal…
Nownuri
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Use old water bore pipe for earthing /grounding

I have a need to install earthing on an existing building which does not have space to dig a hole for new conductor. The building has an old water bore which is no longer in use. The Pipes for water bore are not in commission anymore and were sealed…
Abu Zaid
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Earthing terminal detection and indication

I have developed one instrument and for safety purpose. I want to ensure that machine start only when earthing terminal properly connected to machine and voltage between earth and neutral terminal are less than 10V. I have search on internet but I…
unobtanium
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Why is there no current sharing between neutral and ground?

In the first system, will lamp1 turn on? If yes, then why is there no current sharing between neutral and ground as shown in the second system? I always read that neutral is a current carrying conductor but the ground is not. What is the reason…
Michael George
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What is the point of seperating analog ground and digital ground if they are going to meet at the end

First off, I'm fairly new to electronics, I don't have much knowledge so bear with me. I saw a schematic of an ADC connection to an MCU, and I noticed that the grounds are split into two - Analog and Digital ground. I read up on why they are split.…
user108320
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What is a 'quiet ground' / 'Ground plane'

I really don't expect an analytic answer. I'm sure there are far too many variables to consider. I'm working with a fairly simple circuit (Precision voltage, Instrument amplifier) but need to really an output signal that has have noise a low as…
gandolf
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Why is a company like Bauer allowed to sell Wet/Dry vacuums without the three prong plug for safety?

Why is a company like Bauer allowed to sell Wet/Dry vacuums without the three prong plug for safety? I thought that all electrical appliances designed for outdoor and wet area use should have a third prong ground on the plug and be connected to a…
Mike Ryan
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Separating the grounds for sensitive signals

I'm designing an op amp based phono preamp. It has very high gain (60 dB for 20Hz, 40 dB for 1kHz) and the signal from phono cartridge is very low (like 5mV amplitude). So it's a very sensitive circuit. As you may know signal from the turntable goes…
cubix
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where to place grounds on a circuit

I'm used to seeing circuit schematics with single/no grounds at all (drawn by teachers and some tutors) but now, I see circuits with multiple grounds. My question is, when drawing a particular schematic, what determines the number of grounds and…
Haddon Kno
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How to isolate two ground signals?

I'm have grounding problems (80% sure of it). I have an MPU6050(gyro sensor which works on 3.3V) which is powered by the Arduino's 3.3V pin and SCA,SCL,INT pins are used with the I2C bus of the Arduino Uno which I believe is also 3.3V, and finally…
Rakshith G B
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