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Q&A

Posts tagged EMI

Synonyms: electro-magnetic-interference electromagnetic-interference EM-interference

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33%
+0 −2
Q&A Implementing local ground theory on PCB power distribution [closed]

I've tryed to implement a local ground concept told by Olin Latrop here : He have told: (What I've perceived)You should not connect every gnd point instantly to gnd plane, since it can inject HF ...

0 answers  ·  posted 2mo ago by mohammadsdtmnd‭  ·  closed 2mo ago by Olin Lathrop‭

75%
+4 −0
Q&A Most reliable galvanic isolation technology for extreme EMI environments?

I'm working on another project with extreme EMC requirements as per various notorious military EMC standards. Civilian product but for military use, and as such subject to the toughest levels of co...

1 answer  ·  posted 4mo ago by Lundin‭  ·  last activity 3mo ago by Olin Lathrop‭

77%
+5 −0
Q&A How to perform initialization of static storage variables in embedded systems?

Whenever declaring a variable in C outside a function at file scope or when specifying it as static, it gets assigned a life time known as static storage duration. Meaning it will be accessible thr...

1 answer  ·  posted 1y ago by Lundin‭  ·  last activity 10mo ago by Lorenzo Donati‭

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

81%
+7 −0
Q&A Low-frequency PWM-controlled Mosfet heater circuit

The circuit above is used to control a 240W ceramic heater by means of a PWM signal at 30Hz, generated by a microcontroller, with 5V logic. The input is a standard 280W AC-DC external power adapt...

2 answers  ·  posted 2y ago by francesco‭  ·  last activity 2y ago by Pete W‭

62%
+3 −1
Q&A Microwave oven interfering with WiFi on the 2.4GHz band

As I understand it, microwave oven magnetrons operate at 2.45GHz, which is an unlicensed band in most of the world. When 2.4GHz technologies such as WiFi (802.11), Bluetooth and Zigbee were launche...

2 answers  ·  posted 3y ago by Lundin‭  ·  last activity 3y ago by TonyStewart‭

Question EMC RF WiFi EMI radio
50%
+2 −2
Q&A Can there be a global EMP disaster, whether totally natural or partially natural and partly artificial?

I have no record in electrical engineering; this is a total outsider question which might be grasped absurd. Wikipedia defines EMP as: An electromagnetic pulse (EMP), also sometimes called a tr...

1 answer  ·  posted 3y ago by deleted user  ·  edited 3y ago by Lundin‭