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Recent content by DD

  1. DD

    need new design Tip for motor control application

    The use of a microcontroller can drastically reduce the parts count and cost of your design. Through a sine look-up table you can generate the needed PWM signals can can then be use to drive your power components,whether tyristors or power MOSFETs. If you can be more specific may be I can be of...
  2. DD

    A/D Converters

    I am not sure I understand your question. Are you trying to understand the way pipelined converters work ?<br> If you are describing the flash converters for n bit resolution we will need 2*n comparators. The pipelined A/D only needs n comparators for n bit resolutions because it uses a...
  3. DD

    Simple Switch

    A good circuit would be a transistor that drives a relay. Then the relay contacts can be placed in series with the Christmas lights. Connect the output of the microcontroller with the base of the transistor through a 1-5k ohm resistor, ground the emmiter and place the relay coil between the...
  4. DD

    Tracking operation hours and amp draw for a motor control system.

    If you can give me more details I can help you build this "magic box". First, if the motor is low voltage you can use an IC such as Maxim MAX471 to convert the current drawn to voltage and an A/D converter to digitize this voltage. Then a microcontroller or directly the PC through the parralel...
  5. DD

    tcl/tk

    Can you be more specific ? Are you talking about a specific language such as C or Pascal or other ?
  6. DD

    Oscillating Motor

    Any DC motor with an optical or magnetic encoder will do. Count the pulses from the encoder an reverse polarity to make the motor go the other way. If inertia is a problem decelerate the motor gradually.
  7. DD

    HDSL (high bit-rate digital subscriber line)

    I would to know if "Copper Gold" from Motorola is suitable for using with HDSL. I have a hard time getting any kind of information about it from Motorola. Can you Help ?
  8. DD

    Analog Design?

    I am also an analog designer. You are right in the sense that it doesn't seem to be much activity around here. I have a little experience and I would be glad to help. Mean while anybody knows details about HDSL modems ?
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