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Recent content by n7dal

  1. n7dal

    service monitors/analyzers

    I am about to buy a service monitor (analyzer) and am looking for opinions on the new General Dynamics R2590 vs the IFR 2945A. I want to stay under $10k. Or should I look for a good used IFR COM-120B? Thanks.
  2. n7dal

    current loop control of vsd

    Thanks gentlemen, I will read the suggested document and perhaps post further questions. When you say line reactors may I assume you mean inductors? Are these used to control the dV/dt and hence EMI?
  3. n7dal

    current loop control of vsd

    I have a friend who needs to specify a system for refrigeration of foodstuff. Apparently the HVAC people are calling for a three-phase vsd to control a 50hp blower. It seems that speed control will be done via a current-loop controller that is making the temperature measurements. What are the...

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