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Recent content by mengwang

  1. mengwang

    how to get boost my 5v 10HZ pulse upto 100volts ?

    will charge pump , will do all the work, put the pulse in the VIN?
  2. mengwang

    4 volts to 10 volts step up DC to DC converter

    could you copy the link for me? not able to click the link you sent.
  3. mengwang

    4 volts to 10 volts step up DC to DC converter

    I need very small current less than 100ma.
  4. mengwang

    4 volts to 10 volts step up DC to DC converter

    What kind of circuit works best for 4 volts to 10 volts step up DC to DC converter
  5. mengwang

    USB charge lith battery circuit

    Thanks very much.
  6. mengwang

    USB charge lith battery circuit

    Does some one has this circuitiry ? Use USB to charge the battery.
  7. mengwang

    How to convert cadence design entry HDL . CPM file to Mentor PADs

    How to convert cadence design entry HDL . CPM file ( schemtatic) to Mentor PADs
  8. mengwang

    how to find the spice model for the simuation of MC1496

    it is an old chip, it used to be motrola , now it is on semicondutor. could not find the spice modle.
  9. mengwang

    how to measure input & output referred noise for a ADC

    thanks. how to measure input & output referred noise for a ADC
  10. mengwang

    demodulation questions

    I am doing the ultrasound signal doppler demodulation. Specificly, with a singal with f0, and another signal f0+fd. I want to get the fd. What kind of chip could realize this ? Thanks!
  11. mengwang

    How to design such an op amp?

    use mosfet differential amplifier
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