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Q&A

Posts tagged grounding

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+2 −2
Q&A Weird grounding on a vintage hifi sideboard

I got a vintage ('64) hifi sideboard for Christmas! It's super awesome. However, I don't understand the grounding. It has two female inputs on the backside that are labeled as "Grounding". There w...

1 answer  ·  posted 4mo ago by OddDeer‭  ·  last activity 4mo ago by Olin Lathrop‭

Question grounding hifi
71%
+3 −0
Q&A Is it always necessary to use the ground terminal of the oscilloscope probe?

Assume my oscilloscope is grounded, and the DUT is grounded as well (earth ground). I am using a standard 10 Mohm impedance 1:10 passive probe. So, the ground terminal of the probe is in fact con...

2 answers  ·  posted 3y ago by coquelicot‭  ·  edited 9mo ago by Lorenzo Donati‭

80%
+6 −0
Q&A Ground pour on outer layers on 4-layer PCB

I'm designing a board that contains a cortex-M4 mcu working at 120MHz, and an ethernet bus with a wiznet chip that communicates with SPI. The ethernet chip gives me a phy output that goes directly...

2 answers  ·  posted 10mo ago by DeadMouse‭  ·  edited 9mo ago by Lorenzo Donati‭

Question PCB grounding
70%
+5 −1
Q&A Minimizing Common Mode Radiation - Separating Grounds

There are various different methods to keep common mode currents off the cables, one of them being discussed on the site here and with Olin's decoupling caps post on StackExchange. Slight digressio...

1 answer  ·  posted 1y ago by 2kind‭  ·  last activity 1y ago by TonyStewart‭

66%
+4 −1
Q&A PCB ground planes with isolated voltage

I have designed a PCB that I need to work in which a microcontroller drives a 24 V brushed motor. The input power to the board is 24 V, this is then lowered to 5 V by a step down converter, and thi...

3 answers  ·  posted 2y ago by Alinik‭  ·  last activity 2y ago by KalleMP‭

81%
+7 −0
Q&A High Speed Design - Which grounding strategy to choose?

Although I have done multiple PCB designs which passed FCC and CE equivalents using the MCU's/Multiple MCU's, I have a doubt about how to approach the high speed design using FPGA SoC - main thing ...

1 answer  ·  posted 3y ago by 2kind‭  ·  last activity 3y ago by Olin Lathrop‭