User talk:Congruence

Welcome to Wikipedia!!!

Hello Congruence! Welcome to Wikipedia! Thank you for your contributions. If you decide that you need help, check out Wikipedia:Where to ask a question, ask me on my talk page, or place {{helpme}} on your talk page and someone will show up shortly to answer your questions. Please remember to sign your name on talk pages using four tildes (~~~~); this will automatically produce your name and the date. Below are some recommended guidelines to facilitate your involvement. Happy Editing! -- Piotr Konieczny aka Prokonsul Piotrus ^Talk 21:08, 27 May 2006 (UTC)[reply]

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Puncturing EAS tags???

Hello. You once supplemented the sentence that since then reads "Deactivation is achieved by (...) submitting the tag to a strong electromagnetic field at the resonant frequency which will induce voltages exceeding the capacitor's breakdown voltage, which is artificially reduced by puncturing the tags". What does that addition mean? In shops, I never saw any commercial deactivator that requires anything more than swiping the tag over it. --saimhe (talk) 21:39, 31 January 2008 (UTC)[reply]

Puncturing is done at the factory for disposable RF tags, not in the shop! --Congruence (talk) 21:58, 31 January 2008 (UTC)[reply]

Still, I can't imagine what exactly is done and why it works. --saimhe (talk) 00:25, 1 February 2008 (UTC)[reply]

I imagine it locally reduces the distance between the two plates of the capacitor, lowering the dielectric breakdown voltage at those points, without significantly raising the overall capacity; when subjected to a resonating RF field of sufficient amplitude, breakdown at the puncture sites occurs, creating shorts and detuning the tag. Without this treatment, you would need to have an overall lower breakdown voltage, which would require a thinner film, but that would raise the capacitance and lower the resonant frequency unless you change the dimensions; but then you have constraints on the inductor and the Q value of the overall circuit; in other words the solution space for viable tags is small and puncturing probably allows to enlarge it. --Congruence (talk) 10:13, 1 February 2008 (UTC)[reply]

Thanks, it has sense now. Did you find that information (about tags being punctured) somewhere? Strange that I didn't hear anything similar despite my electronics background. Besides, that part of the article is too confusing without sources, or at least given the current wording. --saimhe (talk) 02:02, 2 February 2008 (UTC)[reply]

ArbCom elections are now open!

Hi,
You appear to be eligible to vote in the current Arbitration Committee election. The Arbitration Committee is the panel of editors responsible for conducting the Wikipedia arbitration process. It has the authority to enact binding solutions for disputes between editors, primarily related to serious behavioural issues that the community has been unable to resolve. This includes the ability to impose site bans, topic bans, editing restrictions, and other measures needed to maintain our editing environment. The arbitration policy describes the Committee's roles and responsibilities in greater detail. If you wish to participate, you are welcome to review the candidates' statements and submit your choices on the voting page. For the Election committee, MediaWiki message delivery (talk) 12:52, 23 November 2015 (UTC)[reply]