| QURIOUS QUOTES | | 
Wendall Harrington, projection designer, Yale professor
"Now that everything in the theatre is made up of digital dust, there is no limit to what can be done." (from PLASA Focus Stamford presentation)
Send us your best quotes.
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Upcoming Classes
| Coming in 2013- Online Classes!
Entertainment Electricity, Power Distribution, and Controls
Los Angeles
Video Lighting Workshop
Entertainment Electrics Workshops
Perth - February 14, 2013
Adelaide - February 18, 2013
Melbourne - February 20, 2013
Canberra - February 22, 2013
Sydney - February 25, 2013
Brisbane - February 27, 2013
Entertainment Controls Workshops
Perth - February 14, 2013
Adelaide - February 18, 2013
Melbourne - February 20, 2013
Canberra - February 22, 2013
Sydney - February 25, 2013
Brisbane - February 27, 2013
Entertainment Electricity, Power Distribution, and Controls
Orlando
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BOOK SALE!
| | Featured Books
Clearance!
Save up to 75% off of these selected items. (Limited quantities)
"Let There Be Light" - $14.95
"Script Analysis" - $11.95
"The Director's Companion" - $9.95
"Close Protection" - $9.95
"Let's Put on a Show" - $9.95
"Crank it Up" - $11.95
"The Microphone Book" - $14.95
To start saving now, click here.
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| PLASA FOCUS | | | Professional Development and More
Don't miss the chance to see new technology, network with the industry, and participate in the Professional Development Program at PLASA Focus Leeds, coming 30 April to 1 May, 2013 at the Royal Amouries Museum, Leeds.
Also, PLASA Focus Orlando is coming May 15-16, 2013 to the Wyndham Orlando Resort off of International Drive. For more information, visit www.plasafocus.com. |
| QUIZZLE | | | Inductors, Capacitors, Reactance, and Power Factor
How much do you know about the nature of electrical loads and the types of loads we use in live event production? It used to be that load calculations were simple because most of our loads, like incandescent lamps, were purely resistive. But that's all changing now. The more we use LEDs, digital consoles, digital amplifiers, projectors, and switch-mode power supplies, the more we need to know about inductance, capacitance, reactance, and power factor.
Take this short quiz to find out how much you know on the subject. The e-test code (you'll need it) is D556D2. Good luck. |
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| PHOTO PHILE | | Ottawa Bluesfest 2011 Revisited 
In July 2011, strong winds felled the stage and truss structure at the Ottawa Bluesfest. Cheap Trick was performing on the stage at the time, but miraculously, no one was killed. The Ottawa Citizen newspaper ran a gripping story about the heroics of the stage crew on that fateful day. To read the story, click here. Thanks to Philip Schulze for emailing us the link.
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| SUSTAINABILITY & OCCUPATIONAL SAFETY | | ESA Strengthens Resolove After Deadly Accident
by Jim Digby
The recent event outside of a stadium in South Africa that tragically claimed the life of one person and injured several who were arriving to see a concert inside, has strengthened the resolve of the Event Safety Alliance to create a global best practices safety guide.
To read more, click here.
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| ELECTRICS AVENUE | | NEC Limits Feeder Connections
Article 520.53 (J) in the National Electrical Code limits the number of supply interconnections for feeder cable. "Where connectors are used in a supply conductor, there shall be a maximum number of three interconnections (mated connector pairs) where the total length from supply to switchboard does not exceed 30 m (100 ft). In cases where the total length from supply to switchboard exceeds 30 m (100 ft), one additional interconnection shall be permitted for each additional 30 m (100 ft) of supply conductor." I guess that package of 50 1-foot 4/0 feeder cables you carry around isn't code compliant. |
| SWAMI CANDELA'S QUEST FOR ANSWERS | | | Why does inductive and capacitive reactance cancel?
Q: If inductive reactance and capacitive reactance both impede AC current, why is it that a combination of the two creates a lessor reactance vector when calculating complex impedance? It seems to me that a circuit having both types of reactance would compound the contribution to overall impedance.
A: There are a lot of ways to think about this, but I think the simplest explanation (and the simplest is always the best) is that an inductor causes the current to lag behind the voltage because the magnetic field opposes the current, but a capacitor causes the voltage to lag behind the current-just the opposite of an inductor. When you put the two together, it bring the voltage and current back in phase with each other. Another way to think about it is that when an inductor is in parallel with a capacitor, the inductor essentially shorts out the capacitor and the capacitor discharges through the inductor, causing the magnetic field in the inductor to be reduced or eliminated.
Test your knowledge of inductance and capacitance with this short quiz. You'll need this e-test code: D556D2.
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APT at CX Roadshow 2013
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APT is hitting the road down under in 2013. Richard Cadena will be joining the CX Road show, offering electrics and control systems classes from Perth to Brisbane next February, 2013. The good news is that the classes will be supplemented with online prep. Go online and read, watch videos, and test your knowledge before you come to the workshop, so you're already up to speed. Your time in the workshop is maximized and not spent learning the basics.
Entertainment Electrics Workshops at CX ROADSHOW 2013 ITINERARY- PERTH Thursday 14th February Perth Hyatt
- ADELAIDE Monday 18th February Adelaide Convention Centre
- MELBOURNE Wednesday 20th February Melbourne Convention Centre
- CANBERRA Friday 22nd February National Convention Centre
- SYDNEY Monday 25th February The Concourse
- BRISBANE Wednesday 27th February Brisbane Convention Centre
For more information, visit www.APTXL.com or email us. |
We would love to hear from you. Please email us and let us know how we're doing.
Sincerely, Richard Cadena
APT |
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For more info, 
