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Recent content by eblacker

  1. eblacker

    Resonant Frequency of water molecule

    Hello Nigel, I may be wrong but my inclination is that the molecule  would not decompose from being forced to resonate. My reason for thinking this is, that you are dealing at this level with quantum mechanics. Since the resonant frequency of a water molecule falls in the microwave...
  2. eblacker

    Incandescent A Bulb Failures

    Hello: rayc,<br><br>Failure of the glass envelope is usually caused by environmental problems.<br>I.E. water droplets, other liquids or drafts causing momentary stresses in the glass.<br><br>If one particular brand of bulb presents a problem it may be due to stresses in the glass imparted during...
  3. eblacker

    Power consumption?

    The power consumed by a card in a PC slot will most likely vary as the card functions. The voltage is well regulated by the power supply at either +5V or +12V or -12V so measuring voltage is kind of a waste of time.<br>You need to know the current the card draws from the DC bus. this can be done...
  4. eblacker

    Diesel Generator Problem

    The frequency is controlled by engine RPM.<br>The voltage is controlled by field current.<br>You didn't mention whether the output voltage was too low or too high.<br>If it is too high then the field current is too high and if the voltage is too low the field current is too low.<br>The voltage...
  5. eblacker

    Hold Time on Power Supply

    Unfortunately you can't get something for nothing.<br>The hold-up time you are dealing with (30msec) is provided by the power supply designer so that you can ride through a missing cycle of the AC mains without disturbing the output voltage. The energy to supply the output has to be stored...

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