[Usittne] USITTNE bar-b-que
Larry Vigus
larry.vigus at yahoo.com
Fri Jul 25 18:43:06 EDT 2008
I would to try to attend this year and would vote for Crystal's for convenience ...
(convenience for me... probably not for Crystal)
Larry Vigus
vigus at bc.edu, Larry.Vigus at Yahoo.com
Actor - Art Director - Teacher - Propmaster
Robsham Theatre Arts Center at Boston College
Equity - SAG - AFTRA since 1977
(c) 310-766-3311 or (h) 603-335-0668
www.agencyprotalent.com/larryvigus
http://www.imdb.com/name/nm0897152/
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To: usittne at mit.edu
Sent: Friday, July 25, 2008 12:13:45 PM
Subject: USITTNE Digest, Vol 56, Issue 16
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Today's Topics:
1. Re: The annual BBQ (Karen J Perlow)
----------------------------------------------------------------------
Message: 1
Date: Thu, 24 Jul 2008 19:55:53 -0400
From: Karen J Perlow <kperlow at MIT.EDU>
Subject: Re: [Usittne] The annual BBQ
To: tiala at mindspring.com, USITT New England Section Mail List
<usittne at MIT.EDU>
Message-ID: <20080724195553.k2swf2wi0q3kgsg0 at webmail.mit.edu>
Content-Type: text/plain; charset=ISO-8859-1; format="flowed"
Hey Crystal et al
sorry to be one of the previous deadbeats who didn't respond, but I can't make
it regardless of the cool location change.
Dimmer workshop sounds cool
Thanks
& have fun
Karen
Quoting Crystal Tiala <tiala at mindspring.com>:
> Dear members of USITT NE, friends and everyone else on this
> listserve, (Don't delete this email, this means you!)
>
> In this email: need your response on the BBQ and on the Dimmer Basics class.
>
> It is time for the annual BBQ coming up on August 23rd. The last
> email I sent about the BBQ did not get much of a response with only 3
> people saying they could come and 1 person a maybe. (Thanks for
> responding to that one John, Keith, Ron and Janice.) We all
> discussed at the March meeting that having it at a state park or
> other open location may be better than at my house.
> I am hoping that if we make this a more fun location that I will get
> a better response from all of you.
> So below are 4 options for you. I would like to know if you would be
> interested in going and which location works best. (For those in
> Boston, there may be carpooling options if I know who is going.)
>
> Option 1:
> Cape Light Opera Company in Falmouth on the Cape may have an
> available lawn. It is closing night of their last show, A Little
> Night Music, if you could buy a ticket and see the show that same
> day. Its a beautiful area to be a tourist, however, traffic and
> distance may be a factor for some of you. It takes about 1 1/2 hours
> from Boston.
>
> Option 2:
> Darlene Anastas has just purchased the farm she talked about at the
> last meeting. It is in Lakeville which is sort of between Boston and
> Providence, RI.
> She says, " If people will forgive the work in progress then great,
> come on down. I also have access to Long Pond for swimming. Bug
> spray and sun block are a must. People would need to bring some form
> of chair as I have tables but lack chairs. One of the fields can be
> lit for night time. Lots of land to roam, set up games, or sit and
> relax. Just a little on the primitive side at the moment. The
> farm is located at 21 Highland Road, Lakeville, MA."
>
> Option 3:
> Cochituate State Park is a beautiful park with swimming, accessible
> restrooms, kayak and canoe rentals, lots of shaded tables and some
> open fields. Beautiful spot and easy to get to in Natick.
> Drawbacks: $5/car for parking, no alcohol and may get really crowded
> on a weekend if the weather is good. Park Directions
> Cochituate State Park is located in the greater Boston area in
> eastern Massachusetts.
>> From East or West: Massachusetts Turnpike (Rte. I-90) to exit 13,
>> Rte. 30 east. Park is on the right.
>
> Option 4: Same old thing at my house in West Roxbury.
>
> Your choice! PLEASE RESPOND!
>
> One more thing:
> Limelight has sent information an a possible Basic Class in dimmer
> and DMX problem solving issues. (Thanks Bill and Greg for this and
> sorry my response has been so slow.)
> The outline is below. Perhaps a workshop sometime during leaf season
> would be great and we can be leaf peepers as well as get an education.
> I would like to know who is interested in this. You said you were
> interested back in March so don't be shy now.
>
> Thank you,
> Your Chair.....
> Crystal
>
> Dimmer Basics 101 (and more)
> 1) Overview of discussion and disclaimer
> 2) Dimmer Evolution
> A) Variable Power Resistors
> B) Variable Transformers
> C) Other Methods
> 3) Safety in the Field
> 4) Ohm?s Law and Power Formula
> 5) Modern basic dimmers and how they work
> A) Basic components in a dimming circuit and what components do
> I) Resistor
> II) Capacitor
> III) SCR
> IV) Triac (& Diac)
> V) Choke
> VI) Switch
> B) A look at the typical load (incandescent lamp)
> I) Cold filament vs. warm filament
> II) Pre-heating
> III) The human element of perception
> C) Circuit Diagrams/Schematics
> 6) Getting more than we asked for
> A) Radio Frequency Interference (RFI)
> I) How does it happens?
> II) How is it reduced?
> B) Power Harmonics
> I) Non-linear loads
> II) What are Harmonics?
> III) Odd harmonics in the neutral
> IV) Transformer Problems
> 7) I don?t know the words so I hum
> A) Where is that buzz coming from?
> I) Lamp filaments
> II) Chokes
> III) Wiring
> B) Noise in the audio system
> I) Use of common mode rejection for low level signals
> II) Distance and right angles
> III) Isolation Transformers
> 8) Resistance verses Inductance
> A) How can we tell if our load is inductive?
> B) What happens to the core (due to non-linear loads)?
> C) What works better for inductive loads?
> I) Fixed series resistor
> II) Rheostat
> III) Multi-Tap Transformer
> IV) Variac
> D) Special Case: Synchronous Motors
> 9) Let?s Get Advanced
> A) A look at some Diagrammatics/Schematics
> B) Simple voltage control
> C) Let?s add a Comparator
> D) The Introduction of the SSR
> E) Dimming curves for your specification
> I) Linear
> II) Square
> III) S Curve
> IV) True Power
> V) Exponential Ramp
> VI) Relay
> 10) Reverse Phase Control
> A) Theory of Operation
> B) Review of Triacs and SCRs
> C) Different components with different features
> I) Transistors
> II) FETs
> III) IGBTs
> IV) GTO thyristor
> 11) Digital Dimming
> 12) Power Requirements & Balancing Your Loads
> A) What Type Do I Have?
> I) Single Phase
> II) 3 Phase
> III) How do I measure the Voltage?
> B) How Much Power Do I Have To Work With?
> I) Finding Current Ratings & What They Mean
> II) What are YOU going to be drawing?
> III) What is the TOTAL load ?
> IV) How do I balance the loads?
> 13) Different Control Methods & Protocols
> A) Voltage control
> B) Analog
> I) AMX 192 (USITT)
> II) D54 (Rank Strand)
> C) Digital
> I) PMX (Pulsar) EIA232
> II) CMX (Colortran) (Precursor to DMX)
> III) SMX (Rank Strand)
> IV) MicroPlex (Leprecon)
> V) DMX (USITT)
> 14) Troubleshooting
> A) Look at the ?BIG PICTURE?
> B) What does work and what doesn?t
> C) Divide & Conquer
> D) Only change one thing at a time
> E) Is the part bad?
> F) Self fix or ?Qualified Field Service Technician?
> G) Common failures and what to look for
> 15) Hands on ? You find the problem
> A) SAFETY FIRST
> B) Basic Tools
> C) Replacing parts
> D) Testing
> 16) Review
>
> Crystal Tiala
> tiala at mindspring.com
> EarthLink Revolves Around You.
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