EMP Shield Scam - Page 1 - EEVblog
网页2019年5月23日 · EMP creates potentially high, damaging voltages by interacting with conductive materials. In the case of a house, you would have the various electrical/electronic devices themselves and you would have the wiring that feeds power to them. Devices that are encased in a full metal enclosure will have the essence of a Faraday shield (albeit ...
EMP Shield - Page 1 - EEVblog
网页2019年1月30日 · Re: EMP Shield. A really big nuclear EMP, or a Carrington event, would bring in massive voltage and current from any long wires to your house. So, electrical mains, phone wire, cable TV, internet, etc. A good whole-house surge suppressor is certainly a good idea. The tiny wires in the photo are laughable, though.
EMP Protection for Your Car! - Page 1 - EEVblog
网页2023年1月19日 · Melanie C 1.0 out of 5 stars As with ionizing radiation, few understand what an EMP is - and this WON'T protect! Reviewed in the United States on February 18, 2022 As a mechanical engineer that has worked with EMP devices, I can tell you, first-hand, that EMP is not a 'direct effect' event, like touching an electrical outlet and being shocked ...
hardening Arduino IO for industrial use - Page 1 - EEVblog
网页2019年1月18日 · If You want to design an industrial shield for your Arduino, the main points, which will help you in your project: - use relay outputs, if you have enough space, and no PWM is needed. Put the relays into sockets. - drive the relays with ULN2803 or some kind of good reliability transistors, or FET's.
To be or not to be EMI shielding... - Page 1 - EEVblog
网页2015年6月10日 · Add one more board and complete a square. Now you have a sealed column. The wave comes, it crashes around the column. Nothing happens, the water level inside remains constant (or it changes slowly, due to water seeping in through the sand or something). This is the ideal case, having solid metal shielding all around.
First RF design, anything wrong with it? - Page 1 - EEVblog
网页2021年12月29日 · Re: First RF design, anything wrong with it? « Reply #6 on: December 29, 2021, 11:10:05 am ». Maybe quarter wave transmission line could be used for lightning protection. Just connect the 915Mhz 1/4 wave line between antenna and the earth, all frequency except band 915Mhz will be discharged to the earth.
Shielding -- Is it effective when floating? - Page 1 - EEVblog
网页2014年4月3日 · Re: Shielding -- Is it effective when floating? « Reply #14 on: April 04, 2014, 05:38:06 am ». In answer to your question, yes, shielding is effective when floating. It might be more effective when grounded to your circuit ground, but it still is effective even if floating.
Set Search Parameters - EEVblog
网页A Free & Open Forum For Electronics Enthusiasts & Professionals. Welcome, Guest.Please login or register. Did you miss your activation email?
HDMI Surge Protection - Page 1 - EEVblog
网页2018年9月6日 · A surge protector will account for signal currents at the connector, but those currents continue into the circuit, dropping voltage across internal traces as well. It might help, it might not. To solve that, you need to route cables as if there were only one cable connecting to each device.
How to make a box that blocks RF signal? - Page 1 - EEVblog
网页2015年4月1日 · Building a shield box requires a good gasket to seal the gap when the box closes, as stated above. The simplest gasket is to get copper tape that is conductive on the glue side and totally cover the gaps where the cover meets the rest of the box. However, it becomes trickier if you need "pass-throughs" for power, signals, etc.