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Recent content by wanneng

  1. W

    Information about the AGC positive loop gain design

    3X!I konw！
  2. W

    The design about the DMM(Digital Multimeter)

    Have someone ever designed the DMM with the max134.I am now designing a DMM with the max134,now I want to control the max134 with the avr uprocessor,Can someone providing the information,I am anxiety for it!
  3. W

    Information about the AGC positive loop gain design

    Yes!I am design a circuit to control the output signa.I want to make the output a fixed value with the dynamic input. the circuit is used in the audio amplifier circuit!
  4. W

    Information about the AGC positive loop gain design

    Can some one give me the information about the agc positive loop gain design?
  5. W

    How to use the lcd with the uprocessor (AVR)?

    svicent,your file is very useful for me, and I use the gcc complier for avr.now I have over come the difficult,I have successfully controlled the lcd displyer with the uprocessor. wanneng
  6. W

    How to use the lcd with the uprocessor (AVR)?

    How to use the lcd? now I want to use lcd to work with the uprocessor(avr),so i want to konw how it works,can some give me some information!
  7. W

    Strange problem. (about comparator)

    Hi ,electronrancher I try to make the circuit as your advice,but when the input signal is low(say, 500hz) the result that the frequency meter make is not accurate,(say the input is 500.12,the output is 500.23),but if I put a capacitor(about0.1u)between the input,the output is stable only the...
  8. W

    Go to school at UC Berkeley for free

    It is a good ideas,but how i can get the book of the coures.
  9. W

    About high speed and high precision

    Thanks,I am also interested in the ic design,and I have the book "opamps for everyone ",and I think it is a very good book,and I am looking for the book of "the art of electronics",but it is difficult to find it (ebook),can tell me some ebook download web. wanneng
  10. W

    About high speed and high precision

    Thanks ,We gonna design on pcb,we gonna to take part in the competition about the circuit design in the nation wild, and I am preparing for it,can you give me some good books and some good experience about circuit design.
  11. W

    About high speed and high precision

    Thanks,Can you give me some advice about the circuit design procidure,and the diffirence between the circuit design software of Pspice and ewb
  12. W

    About high speed and high precision

    thanks,I see,and I am a beginner ,can someone give me some advice with the circuit designing.
  13. W

    About high speed and high precision

    I am a beginner with the ciecuit design,and I am comfused with some concept,A op amp with high speed ans high precision,is the high speed means that it has the wide bandwidth and high SR,is the high precision means that it has the low noise,and with a datasheet ,how i can know if it is a high...
  14. W

    Voltage comparator and shmitt trigger

    comparator Thanks,I measure the wave with a commerical frequency counter,and the result is right,is the voltage compatator is not precise? I am using the mxl1016,and then attach to a lm311.but the precise is not meet my require.(0.01%)
  15. W

    Voltage comparator and shmitt trigger

    trigger comparator Tkanks,but the output waveform have no oscillating,but its seting time is about 250ns,I realy don't konw what to do next?
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