Questions tagged [ground]
Ground or earth is the reference point in an electrical circuit from which other voltages are measured, or is a common return path for electric current, or a direct physical connection to the Earth.
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What does ground do in a circuit? Why does my battery still 'work'? [duplicate]
I have this circuit diagram. I understand that the battery creates a potential difference which is the voltage and therefore causes current to flow through the circuit. However, I don't understand ...
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Should I connect frame ground to AC earth ground?
I have a robotic work cell which takes in 120VAC and runs off of a 24VDC power supply. There are a few DC devices in my system which come with a ground terminal (in addition to the + and - terminals). ...
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Can I put ground and signal on the same layer?
Previously my whole middle layer was designed as ground (top and bottom for signal and one of the middle for ground, another one of the middle is not used). However, a 4-layer PCB costs 6 times more ...
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Power and Ground Amp Readings Don't Match
I have a little brain teaser based on my experiences in building electrical systems. When investigating electrical distributions in building renovation projects, I would often take amp readings using ...
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Detecting disconnected ground potential
I need help to design a circuit that will detect if one of several GND connections break.
I am working on a PCB for an industrial application where I am designing an add-on module for an external ...
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Does the GND of the power circuit need to be connected to electronics GND to avoid floating voltage going above insulation rating?
I am working on a charger for a lead-accid battery that consists of a Vienna rectifier + DC-DC converter.
The power for the power stages comes from a 500 V -> 110 V transformer.
The power for the ...
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What is the maximum potential difference between two isolated circuits?
My question is regarding the theory behind the difference in potential between two isolated circuits - both floating relative to earth. This is particularly relevant in HV applications, to prevent ...
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Switched ground to switched 12 V
Car wiring specific question.
I'm doing a wiring conversion on an older car using newer car's wiring loom and some of the logic is not identical. Need help solving two issues:
I have a button that ...
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If you have an LED light tower, with 2 lights (green/red), that have a common ground, do you require power relays to control both?
I have a simple LED indicator tower with 2 colors, at 12 V DC. They are green and red. The brown wire is a buzzer. They all have a common ground:
I was trying to wire it up to an Arduino (2 separate ...
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GND copper around differential pair
This an extract of the rpi CM5 IO board:
It provides lines for HDMI (yellow rectangles) and ethernet (green rectangle). These are differential pairs and this design makes me wonder:
I supposed that ...
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PCB design for audio compressor – THT routing, GND plane and power tracks
I’m working on a PCB design for an audio compressor. I don’t have much prior experience with PCB layout, so I’d really appreciate any advice or feedback you might have.
I’ve attached the layout of my ...
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Why don't all inverters have neutral connected to ground?
I found an interesting question here about ground-to-neutral voltage not being zero volts in an inverter: Measuring voltage on an edison outlet in a hybrid vehicle
I understand it could be made ...
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Mounting Hole Grounding Strategy for High-Current PCB With AC Earth and DC Ground
I'm working on my first PCB that integrates both an AC source (with protective earth/PE) and a DC ground plane (GND). This board is designed for high current (up to 10A), so good layout and grounding ...
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Is my GND plane layout okay for a tube + op-amp audio preamp?
I'm designing a PCB for an audio preamplifier that combines vacuum tubes and op-amps. The design is split across two boards (top and bottom layers), and this is the current state of my ground (GND) ...
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Impedance and Electrochemical Front End do we need dual voltage rails and split ground
I am using AD5941 for my measurements from different sensors.I will be making a breakout board such that in my board I will be providing pads for connecting the sensors and the output of AD5941 will ...
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