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<DIV>I would to try to attend this year and would vote for Crystal's for convenience ...</DIV>
<DIV>(convenience for me... probably not for Crystal)<BR> </DIV>
<DIV><STRONG><FONT color=#000000><FONT face="bookman old style, new york, times, serif" size=4><FONT size=5>L</FONT>arry <FONT size=3><FONT size=5>V</FONT>igus</FONT></FONT></FONT></STRONG></DIV>
<DIV><FONT color=#000000 size=2><A href="mailto:vigus@bc.edu" target=_blank rel=nofollow><FONT color=#0000ff>vigus@bc.edu</FONT></A>, <A href="mailto:Larry.Vigus@Yahoo.com" target=_blank rel=nofollow>Larry.Vigus@Yahoo.com</A></FONT></DIV>
<DIV><FONT size=2><FONT color=#000000>Actor - Art Director - </FONT><FONT color=#000000>Teacher - Propmaster</FONT></FONT></DIV>
<DIV align=left><FONT color=#000000 size=2>Robsham Theatre Arts Center at Boston College<BR> Equity - SAG - AFTRA since 1977<BR></FONT>(c) 310-766-3311 or (h) 603-335-0668<BR><A href="http://www.agencyprotalent.com/larryvigus" target=_blank rel=nofollow>www.agencyprotalent.com/larryvigus</A><BR><A href="http://www.imdb.com/name/nm0897152/" target=_blank rel=nofollow>http://www.imdb.com/name/nm0897152/</A></DIV>
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<DIV style="FONT-SIZE: 10pt; FONT-FAMILY: arial, helvetica, sans-serif">----- Original Message ----<BR>From: "usittne-request@mit.edu" <usittne-request@mit.edu><BR>To: usittne@mit.edu<BR>Sent: Friday, July 25, 2008 12:13:45 PM<BR>Subject: USITTNE Digest, Vol 56, Issue 16<BR><BR>Send USITTNE mailing list submissions to<BR> <A href="mailto:usittne@mit.edu" ymailto="mailto:usittne@mit.edu"><FONT color=#0000ff>usittne@mit.edu</FONT></A><BR><BR>To subscribe or unsubscribe via the World Wide Web, visit<BR> <A href="http://mailman.mit.edu/mailman/listinfo/usittne" target=_blank><FONT color=#0000ff>http://mailman.mit.edu/mailman/listinfo/usittne</FONT></A><BR>or, via email, send a message with subject or body 'help' to<BR> <A href="mailto:usittne-request@mit.edu" ymailto="mailto:usittne-request@mit.edu"><FONT color=#0000ff>usittne-request@mit.edu</FONT></A><BR><BR>You can reach the person managing the
list at<BR> <A href="mailto:usittne-owner@mit.edu" ymailto="mailto:usittne-owner@mit.edu"><FONT color=#0000ff>usittne-owner@mit.edu</FONT></A><BR><BR>When replying, please edit your Subject line so it is more specific<BR>than "Re: Contents of USITTNE digest..."<BR><BR><BR>Today's Topics:<BR><BR> 1. Re: The annual BBQ (Karen J Perlow)<BR><BR><BR>----------------------------------------------------------------------<BR><BR>Message: 1<BR>Date: Thu, 24 Jul 2008 19:55:53 -0400<BR>From: Karen J Perlow <<A href="mailto:kperlow@MIT.EDU" ymailto="mailto:kperlow@MIT.EDU"><FONT color=#0000ff>kperlow@MIT.EDU</FONT></A>><BR>Subject: Re: [Usittne] The annual BBQ<BR>To: <A href="mailto:tiala@mindspring.com" ymailto="mailto:tiala@mindspring.com"><FONT color=#0000ff>tiala@mindspring.com</FONT></A>, USITT New England Section Mail List<BR> <<A href="mailto:usittne@MIT.EDU" ymailto="mailto:usittne@MIT.EDU"><FONT
color=#0000ff>usittne@MIT.EDU</FONT></A>><BR>Message-ID: <<A href="mailto:20080724195553.k2swf2wi0q3kgsg0@webmail.mit.edu" ymailto="mailto:20080724195553.k2swf2wi0q3kgsg0@webmail.mit.edu"><FONT color=#0000ff>20080724195553.k2swf2wi0q3kgsg0@webmail.mit.edu</FONT></A>><BR>Content-Type: text/plain; charset=ISO-8859-1; format="flowed"<BR><BR>Hey Crystal et al<BR>sorry to be one of the previous deadbeats who didn't respond, but I can't make<BR>it regardless of the cool location change.<BR>Dimmer workshop sounds cool<BR>Thanks<BR>& have fun<BR>Karen<BR><BR>Quoting Crystal Tiala <<A href="mailto:tiala@mindspring.com" ymailto="mailto:tiala@mindspring.com"><FONT color=#0000ff>tiala@mindspring.com</FONT></A>>:<BR><BR>> Dear members of USITT NE, friends and everyone else on this <BR>> listserve, (Don't delete this email, this means you!)<BR>><BR>> In this email: need your response on
the BBQ and on the Dimmer Basics class.<BR>><BR>> It is time for the annual BBQ coming up on August 23rd. The last <BR>> email I sent about the BBQ did not get much of a response with only 3 <BR>> people saying they could come and 1 person a maybe. (Thanks for <BR>> responding to that one John, Keith, Ron and Janice.) We all <BR>> discussed at the March meeting that having it at a state park or <BR>> other open location may be better than at my house.<BR>> I am hoping that if we make this a more fun location that I will get <BR>> a better response from all of you.<BR>> So below are 4 options for you. I would like to know if you would be <BR>> interested in going and which location works best. (For those in <BR>> Boston, there may be carpooling options if I know who is going.)<BR>><BR>> Option 1:<BR>> Cape Light Opera Company in Falmouth on the Cape may have an <BR>> available
lawn. It is closing night of their last show, A Little <BR>> Night Music, if you could buy a ticket and see the show that same <BR>> day. Its a beautiful area to be a tourist, however, traffic and <BR>> distance may be a factor for some of you. It takes about 1 1/2 hours <BR>> from Boston.<BR>><BR>> Option 2:<BR>> Darlene Anastas has just purchased the farm she talked about at the <BR>> last meeting. It is in Lakeville which is sort of between Boston and <BR>> Providence, RI.<BR>> She says, " If people will forgive the work in progress then great, <BR>> come on down. I also have access to Long Pond for swimming. Bug <BR>> spray and sun block are a must. People would need to bring some form <BR>> of chair as I have tables but lack chairs. One of the fields can be <BR>> lit for night time. Lots of land to roam, set up games, or sit and <BR>> relax.
Just a little on the primitive side at the moment. The <BR>> farm is located at 21 Highland Road, Lakeville, MA."<BR>><BR>> Option 3:<BR>> Cochituate State Park is a beautiful park with swimming, accessible <BR>> restrooms, kayak and canoe rentals, lots of shaded tables and some <BR>> open fields. Beautiful spot and easy to get to in Natick. <BR>> Drawbacks: $5/car for parking, no alcohol and may get really crowded <BR>> on a weekend if the weather is good. Park Directions<BR>> Cochituate State Park is located in the greater Boston area in <BR>> eastern Massachusetts.<BR>>> From East or West: Massachusetts Turnpike (Rte. I-90) to exit 13, <BR>>> Rte. 30 east. Park is on the right.<BR>><BR>> Option 4: Same old thing at my house in West Roxbury.<BR>><BR>> Your choice! PLEASE RESPOND!<BR>><BR>> One more thing:<BR>> Limelight has sent
information an a possible Basic Class in dimmer <BR>> and DMX problem solving issues. (Thanks Bill and Greg for this and <BR>> sorry my response has been so slow.)<BR>> The outline is below. Perhaps a workshop sometime during leaf season <BR>> would be great and we can be leaf peepers as well as get an education.<BR>> I would like to know who is interested in this. You said you were <BR>> interested back in March so don't be shy now.<BR>><BR>> Thank you,<BR>> Your Chair.....<BR>> Crystal<BR>><BR>> Dimmer Basics 101 (and more)<BR>> 1) Overview of discussion and disclaimer<BR>> 2) Dimmer Evolution<BR>> A) Variable Power Resistors<BR>> B) Variable Transformers<BR>> C) Other Methods<BR>> 3) Safety in the Field<BR>> 4) Ohm?s Law and Power Formula<BR>> 5) Modern
basic dimmers and how they work<BR>> A) Basic components in a dimming circuit and what components do<BR>> I) Resistor<BR>> II) Capacitor<BR>> III) SCR<BR>> IV) Triac (& Diac)<BR>> V) Choke<BR>> VI) Switch<BR>> B) A look at the typical load (incandescent lamp)<BR>> I) Cold
filament vs. warm filament<BR>> II) Pre-heating<BR>> III) The human element of perception<BR>> C) Circuit Diagrams/Schematics<BR>> 6) Getting more than we asked for<BR>> A) Radio Frequency Interference (RFI)<BR>> I) How does it happens?<BR>> II) How is it reduced?<BR>> B) Power Harmonics<BR>> I) Non-linear loads<BR>>
II) What are Harmonics?<BR>> III) Odd harmonics in the neutral<BR>> IV) Transformer Problems<BR>> 7) I don?t know the words so I hum<BR>> A) Where is that buzz coming from?<BR>> I) Lamp filaments<BR>> II) Chokes<BR>> III) Wiring<BR>> B) Noise in the audio system<BR>> I) Use of common mode rejection for low level signals<BR>>
II) Distance and right angles<BR>> III) Isolation Transformers<BR>> 8) Resistance verses Inductance<BR>> A) How can we tell if our load is inductive?<BR>> B) What happens to the core (due to non-linear loads)?<BR>> C) What works better for inductive loads?<BR>> I) Fixed series resistor<BR>> II) Rheostat<BR>> III) Multi-Tap Transformer<BR>>
IV) Variac<BR>> D) Special Case: Synchronous Motors<BR>> 9) Let?s Get Advanced<BR>> A) A look at some Diagrammatics/Schematics<BR>> B) Simple voltage control<BR>> C) Let?s add a Comparator<BR>> D) The Introduction of the SSR<BR>> E) Dimming curves for your specification<BR>> I) Linear<BR>> II) Square<BR>> III) S Curve<BR>> IV) True
Power<BR>> V) Exponential Ramp<BR>> VI) Relay<BR>> 10) Reverse Phase Control<BR>> A) Theory of Operation<BR>> B) Review of Triacs and SCRs<BR>> C) Different components with different features<BR>> I) Transistors<BR>> II) FETs<BR>> III) IGBTs<BR>> IV) GTO thyristor<BR>> 11) Digital Dimming<BR>> 12) Power
Requirements & Balancing Your Loads<BR>> A) What Type Do I Have?<BR>> I) Single Phase<BR>> II) 3 Phase<BR>> III) How do I measure the Voltage?<BR>> B) How Much Power Do I Have To Work With?<BR>> I) Finding Current Ratings & What They Mean<BR>> II) What are YOU going to be drawing?<BR>> III) What is the TOTAL load ?<BR>>
IV) How do I balance the loads?<BR>> 13) Different Control Methods & Protocols<BR>> A) Voltage control<BR>> B) Analog<BR>> I) AMX 192 (USITT)<BR>> II) D54 (Rank Strand)<BR>> C) Digital<BR>> I) PMX (Pulsar) EIA232<BR>> II) CMX (Colortran) (Precursor to DMX)<BR>> III) SMX (Rank Strand)<BR>> IV)
MicroPlex (Leprecon)<BR>> V) DMX (USITT)<BR>> 14) Troubleshooting<BR>> A) Look at the ?BIG PICTURE?<BR>> B) What does work and what doesn?t<BR>> C) Divide & Conquer<BR>> D) Only change one thing at a time<BR>> E) Is the part bad?<BR>> F) Self fix or ?Qualified Field Service Technician?<BR>> G) Common failures and what to look for<BR>> 15) Hands on ? You find the problem<BR>> A) SAFETY FIRST<BR>> B) Basic Tools<BR>> C) Replacing parts<BR>> D) Testing<BR>> 16)
Review<BR>><BR>> Crystal Tiala<BR>> <A href="mailto:tiala@mindspring.com" ymailto="mailto:tiala@mindspring.com"><FONT color=#0000ff>tiala@mindspring.com</FONT></A><BR>> EarthLink Revolves Around You.<BR><BR><BR><BR><BR><BR>------------------------------<BR><BR>_______________________________________________<BR>USITTNE mailing list<BR><A href="mailto:USITTNE@mit.edu" ymailto="mailto:USITTNE@mit.edu"><FONT color=#0000ff>USITTNE@mit.edu</FONT></A><BR><A href="http://mailman.mit.edu/mailman/listinfo/usittne" target=_blank><FONT color=#0000ff>http://mailman.mit.edu/mailman/listinfo/usittne</FONT></A><BR><BR><BR>End of USITTNE Digest, Vol 56, Issue 16<BR>***************************************<BR></DIV></DIV></DIV></div><br>
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