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.
1,645 questions
3 votes
1 answer
188 views
Why does resistance value in a MegOhmMeter dip when touching an unrelated conductor in a 8-conductor low-voltage HVAC CL2 cable?
Am using Klein tools ET600 to check if there is any hidden short to ground (like nail touching any conductor) in any of the 8-conductors in a 60 feet HVAC cable running from indoor air-handler to ...
- 31
2 votes
2 answers
157 views
Best Buck converter topology for high power charger?
I am designing a buck converter for a lead acid battery with an output current of 135 A and voltage from 108 V to 142 V in different CC and CV stages. The input voltage is 165 V from a Vienna ...
- 103
0 votes
1 answer
86 views
Dynamic Load (FET Slammer): breaking ground loop
I am designing a simple dynamic electronic load (FET slammer) for testing the step load response of voltage regulators. My target voltage range is 0.6-12V and 1-5A load current. I will connect CH1 of ...
- 91
0 votes
1 answer
75 views
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). ...
- 27
-1 votes
3 answers
121 views
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 ...
- 45
2 votes
1 answer
160 views
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 ...
- 47
1 vote
1 answer
154 views
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 ...
- 213
5 votes
3 answers
371 views
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 ...
