Guess the guy now needs a cataplasm! :D When I saw 'video', I was expecting something like http://www.youtube.com/watch?v=M8nT97CrgcU Brian Steve Gregory wrote: > Ahhhhh, I see. You explained it so well Inge, but maybe a lot of people > didn't understand it. Well, fortunately for them, I have this video > posted on my web page of a catacitor that got charged with 600 VDC but > had nowhere to discharge. So it kicked back to the resistor which in > turn released the charged catacitor: > http://stevezeva.homestead.com/files/pinky.wmv > > -Steve Gregory- > > -----Original Message----- > From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge > Sent: Sunday, October 22, 2006 4:31 PM > To: [log in to unmask] > Subject: Re: [TN] NTC: Friday enigma. > > So, if you connect the plus pole to the front legs on a cat ( a > catacitor), and the minus to the rear legs, and also place your sister > (resister) in series, and switch on the 600 VDC supply, then the cat > will make a tremendous jump (inrush) but will come nowhere because of > your sister, who got 50 times the weight of the cat. But the cat is > charged with anger and will take any opportunity to kick back. I > understand that, but the rest is hard to see. So, you paint one side of > the cat with conductive silver epoxy, let it cure at room, which will > take time as it follows an asymptotic curve. > And after that you switch on again. And you say, that the cat can never > pull the cord again and the cord can never slacken. The only solution I > can find, is that the cat died because it disliked the silver epoxy and > tried to lick it off, and as the cat's gone, it can't pull the cord any > more. So far OK, but why can't the cord slacken? Your sister ought to > give a shrill and run to the cat and take it up and sob and pat the cat, > and the cord will slacken. Your insisted bilateral equipotential > anticircumstance ....I can't fix that. > > Inge > > PS. I'm still thinking that it's a 47 pF cap, because the end cap silver > has migrated across, silver has atomic number 47 and when the circuit is > switched on, you will here a tiny 'pFff' when the bridge burns off, and > the cap works again. > > > > ----- Original Message ----- > From: "Brian Ellis" <[log in to unmask]> > To: <[log in to unmask]> > Sent: Monday, October 23, 2006 5:23 PM > Subject: Re: [TN] NTC: Friday enigma. > > > >>OK, the monetary value is obviously zero, as it is short-circuited by >>the metal. But the enigma is its electrical value as a capacitor. If a > > >>capacitor is connected to a DC source via a resistor to limit the >>current, there will be an initial surge of current of a value >>determined by the source voltage and the resistance of the circuit, >>determined by Mr Ohm. The current will then decay exponentially as the > > >>capacitor charges, providing a back EMF to the source, heading towards > > >>an asymptote of zero (assuming a perfect capacitor), when it is fully >>charged. The higher the value of the capacitor, the higher will be the > > >>current after a given time, and the longer will be the decay curve. In > > >>this case, after the given time, the current will be the same as the >>initial value, indicating that the value of the capacitor will be >>infinity farads because it can never be charged to the source voltage >>and the charging current can never decay. :) :) >> >>Brian >> >>Brian Ellis wrote: >> >>>On http://stevezeva.homestead.com/files/c46.JPG there is an 'orrible >>>photo of a ceramic capacitor. What is its value? :-) :-) >>> >>>--------------------------------------------------- >>>Technet Mail List provided as a service by IPC using LISTSERV 1.8e To > > >>>unsubscribe, send a message to [log in to unmask] with following text >>>in the BODY (NOT the subject field): SIGNOFF Technet To temporarily >>>halt or (re-start) delivery of Technet send e-mail to >>>[log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing > > >>>per day of all the posts: send e-mail to >>>[log in to unmask]: SET Technet Digest >>>Search the archives of previous posts at: >>>http://listserv.ipc.org/archives >>>Please visit IPC web site >>>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional >>>information, or contact Keach Sasamori at [log in to unmask] or >>>847-615-7100 >>>ext.2815 >>>----------------------------------------------------- >>> >> >>--------------------------------------------------- >>Technet Mail List provided as a service by IPC using LISTSERV 1.8e To >>unsubscribe, send a message to [log in to unmask] with following text in > > >>the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt >>or (re-start) delivery of Technet send e-mail to >>[log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing >>per day of all the posts: send e-mail to >>[log in to unmask]: SET Technet Digest >>Search the archives of previous posts at: >>http://listserv.ipc.org/archives Please visit IPC web site >>http://www.ipc.org/contentpage.asp?Pageid=4.3.16 >>for additional information, or contact Keach Sasamori at >>[log in to unmask] or 847-615-7100 ext.2815 >>----------------------------------------------------- > > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e To > unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or > (re-start) delivery of Technet send e-mail to [log in to unmask]: SET > Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the > posts: send e-mail to [log in to unmask]: SET Technet Digest Search the > archives of previous posts at: http://listserv.ipc.org/archives Please > visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for > additional information, or contact Keach Sasamori at [log in to unmask] or > 847-615-7100 ext.2815 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 > ----------------------------------------------------- > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815 -----------------------------------------------------