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  1. C

    Voice playback

    Which chip can playback normal voice? "one" ,"two"...."three"....."nine".."ten" then can use the mircocontroller to control each one playing back Thx
  2. C

    Something about Digital to Analog Converter

    I am used a AD5678 -2 (16 bit
  3. C

    +/-15V power supply using LM317 and LM337 regulator ICs

    +/-15V power supply using LM317 and LM337 regulator ICs How to designa +/-15V power supply using LM317 and LM337 regulator ICs. Thx The voltage is used to DAC (AD669) I have try to design the circuit.... Is it Right??
  4. C

    About Visual Basic6 and RS232 ASCII communication

    About Visual Basic6 and RS232 ASCII communication If I want to send the value (ASCII) to 8051 series port VB block input: 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.1 0.11 0.12 0.13 0.14 0.15 0.16 0.17 0.18 . . . . . . . 29.93 29.94 29.95 29.96 29.97 29.98 29.99 30.00 RS232 transmit ...
  5. C

    D to A covertor reference

    D to A covertor reference Any High Precision +-10 V Reference?? AD688 is too expensive...any other cheaper??
  6. C

    EAGLE layout Error

    why i can't open the sc,lbr and borad in other PC??
  7. C

    What is the mean of Condensation Error??

  8. C

    Linear Voltage Regulator Design

    If I want to output 0-30V Vin =
  9. C

    About this Cirucit

    Is it OK?get any problem?? I am a newbie.....which part is current limit?? If i want to remove the current limit part...how to change the circuit?? thanks
  10. C

    How can this circuit improve 0...30V???

    It is a 3 to 24 V linear power supply how can this circuit improve 0...30V???  :P :P :P
  11. C

    I get a problem of 0-30 Vdc Stabilized Power Supply

    I have couple of questions of this project. http://www.electronics-lab.com/projects/power/003/index.html How could it change the P1 and P2 to be Vref for D/A convertor 0-10V and how to caculate the resistor???? Thanks a lot
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