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Articles Tagged Electrical

  • Friday, May 31, 2013
    Dirty AC Power? Where To Lay The Blame For System Noise Problems
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    Bill Whitlock 05/31/13 12:56 PM,
    The idea that “dirty” power causes audio system noise problems has a nearly irresistible intuitive appeal - and there are dozens of companies ready to cash in on this widespread but mistaken belief. For example, here is a quote from a well-known manufacturer of power conditioning products: “Today’s residential systems contractors face unprecedented challenges where high resolution, trouble-free operation is required. From inducing AC ground loops, video hum bars, static bursts, damage from AC line surges and variable audio and… View this story
    Filed in: AV • Feature • Blog • Study Hall • Analog • AV • Installation • Interconnect • Measurement • Power • Signal

  • Monday, April 30, 2012
    Power Lines: Determining When “Isolated Grounding” Is Needed
    a/v
    Bill Whitlock 04/30/12 02:37 PM,
    If electrical wiring, from main breaker panel to outlet, consists of Romex and plastic J-boxes, an “isolated” or “technical” ground system is already in place. This is the case In most, but not all, residential wiring. However, when wiring consists of metallic conduit and J-boxes, as in most commercial buildings, an isolated safety-grounding scheme can sometimes reduce audio system noise. It is most applicable in situations where conduit may come in contact with building steel, water pipes, gas pipes, or… View this story
    Filed in: AV • Feature • Study Hall • AV • Power • Signal

  • Tuesday, August 02, 2011
    The Benefits Of Series Mode Surge Suppression
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    Neil A. Muncy 08/02/11 04:56 PM, 0 Comments
    Multiple sources of transient electrical noise (surges) including motors, HVAC equipment, photocopiers, power tools, etc, are present in all modern buildings. Surge energy conveyed by building power systems may also result from external sources such as nearby lightning strikes. To minimize the likelihood of injuries to personnel and damage to equipment due to electrical surges and accidental fault conditions, in North America the National Electrical Code (NEC) specifies that all exposed electrical equipment in building electrical systems is to be… View this story
    Filed in: AV • Feature • Poll • Study Hall • AV • Concert • Installation • Interconnect • Power • Signal • Stage • System • Audio

  • Thursday, March 17, 2011
    Don’t Kill The Artist! Electrical Safety On Stage
    dave rat live sound
    Dave Rat 03/17/11 08:35 AM, 3 Comments
    Although the musicians we work with can tax our patience at times, and occasionally less than pleasant thoughts regarding them cross our minds, I seriously doubt that watching them fry from high voltage is something any of us would want to be responsible for. With that in mind, here are some basic precautions and tests to reduce if not eliminate the possibility of electrocuting our musical friends. Let’s start by stating that it is of the utmost importance that the… View this story
    Filed in: Live Sound • Feature • Poll • Study Hall • Concert • Engineer • Interconnect • Power • Sound Reinforcement • Stage • System • Technician • Audio

  • Monday, August 31, 2009
    ARX Releases New USB I/O Universal Transformer Isolated USB Interface
    arx usb
    PSW Staff 08/31/09 03:10 PM, 0 Comments
    ARX Systems has announced the addition of the new and unique USB I/O Universal Transformer Isolated USB Interface to its range of precision audio tools. The USB I/O is a true “plug and play” analog-to-digital and digital-to-analog pro audio interface and requires no special driver program installation on Mac OSX, Win XP and Vista. It features transformer isolated audio inputs and outputs, with new USB analog-to-digital and digital-to-analog converter chipsets that are incorporated into the circuit topology, allowing maximum headroom… View this story
    Filed in: Live Sound • Recording • Church Sound • Product • AV • Installation • Interconnect • Sound Reinforcement • Stage • Studio • Audio

  • Tuesday, August 04, 2009
    Registration Open For NSCA Electronic Systems Technician (EST) Training Series
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    PSW Staff 08/04/09 03:19 PM, 0 Comments
    Registration is now open for fall classes of the NSCA University Electronic Systems Technician (EST) Training Series, providing convenient and in-depth training. Training starts September 14 and runs for 38 weeks. The Electronic Systems Technician (EST) curriculum includes a comprehensive overview of the entire commercial electronic systems industry. Students learn about a variety of systems, applications, national codes and standards while gaining real-life, on-the-job training as well as the ability to: • Interpret electrical drawings, site plans and more •… View this story
    Filed in: Live Sound • Church Sound • News • Training • AV • Business • Education • Engineer • Installation • Sound Reinforcement • Technician • Audio

  • Wednesday, July 15, 2009
    InfoComm International Board Names Jim Ford, PE, Secretary-Treasurer
    infocomm ford av
    PSW Staff 07/15/09 09:11 AM, 0 Comments
    The Board of Directors of InfoComm International has selected Jim Ford, PE, of Ford Audio-Video Systems to serve as InfoComm Secretary-Treasurer for the remainder of 2009.  Ford will serve as President-Elect in 2010, and will continue to ascend through InfoComm’s offices, in accordance with the InfoComm Bylaws. “InfoComm’s Board of Directors had the unfortunate task of selecting a successor to Michael Vergauwen, who passed away a few weeks ago,” said Jay Rogina, CTS, President, InfoComm International.  “The Board consulted with… View this story
    Filed in: Live Sound • News • AV • Business • Education • Installation • Audio