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  1. smorein

    Outer rotor (outrunner) motor control circuit

    I have also been thinking about using those motors (the brushless DC motors for RC aircraft) in different (noncomericial) applications. They are far less expensive than alternative brushless motors. ($200 as I recall for a 1HP capable motor) One big issue is the need for cooling. They are...
  2. smorein

    kWh

    Actually in common usage 1 Kb is 1024 bits, not bytes. (128 Bytes). we mostly use a upercase B when we mean bytes - 8 Kb is 1KB. Needless to say, this is mixed up more than a few times. C is for coulomb, a unit of charge, while capacitance is farhad (F)
  3. smorein

    A bug in the electrical system. Noise?

    A coax shielded signal, with a pigtail connection to ground can be looked at as the following: A capacitor from the signal source to the shield, an inductor from the shield to ground. This is, of course, one way of wiring an antenna (with the shield as the antenna): a capacitor to isolate any...

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