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Recent content by heyheyhey

  1. H

    What PNP Bipolar modular to choose for bandgap simulation?

    Re: bandgap simulation You make one like what you see in figure 2 on this site **broken link removed**
  2. H

    Difference between rds and ro ?

    ro is 1/(Ids * lambda) where lambda is the channel modulation length factor. Ideally ro should be infinite. You can also get ro in terms of the early voltage va like at this website **broken link removed**
  3. H

    salaries in the USA (HW design)

    For salary information go to this site and search for engineering jobs by search state/metro **broken link removed**
  4. H

    how to use pmos as capacitor

    Are you creating layout or are you using an IC? If you are using an IC like the CD4007 you need to remember to connect the VDD terminal as part of your circuit otherwise it will not work. If you are creating layout, you should do what the user above said.
  5. H

    Half sample delay z^(-1/2) block

    1 sample delay Fractional delay blocks can easily be made with the Signal Processing Blockset and Matlab's filter builder. **broken link removed** **broken link removed**
  6. H

    Is there a device that detects inner sounds produced by humans?

    Re: is there any device " is ultrasound one of it?" Ultrasound is used for imaging, like how dolphins use sonar. Ultrasound are high frequency sound waves, you can't listen to these sounds. The sounds made by the body are all within the acoustic range (what humans can hear).
  7. H

    Which boards could I use for processing and analysis of ECG signal?

    Re: DSP Processing There is many IEEE publications on this. You can also use this information from texas instruments **broken link removed** https://www.ti.com/sc/docs/general/dsp/fest99/poster/ejovanov.pdf
  8. H

    how to read an instrumentation schematic

    how to read a schematic Do you mean something like this https://en.wikipedia.org/wiki/Process_flow_diagram
  9. H

    sizing for treshold voltage

    You don't change w/l, you change Vb. https://en.wikipedia.org/wiki/Body_effect
  10. H

    Any Recommendation on DSP Development kits?

    What is your application? For speech processing, TI is the best.
  11. H

    Terms:jitter,Bounce,Ripple

    All of these terms refer to some kind of unwanted change. Jitter usually means some kind of unwanted change in time like a clock that is not right. Jitter is not deterministic. https://en.wikipedia.org/wiki/Jitter Bounce usually means that there is noise on ground. This noise is not...
  12. H

    How to do 255*X without a multiplier?

    Re: question If it is digital, then you can shift left 8 times to for multiply by 256 then subtract by x. So mathematically this is x*256 - x = x*(256 - 1) = x*255 .
  13. H

    Looking for analog IC job in USA

    Re: analog ic job Try to get a internship before you graduate. Also try to stay in school for a MS degree. It is usually easier to get a job with little experience and an MS than little experience and a BS.
  14. H

    Analog and Digital Design

    Analog is better. Anyone can do digital design. Anyone can write verilog code and turn that directly into layout. Special designers can do analog.
  15. H

    measuring capacitance and inductance

    hay bridge method of measuring capacitance Here is how Agilent makes that measurement http://www.home.agilent.com/agilent/faqDetail.jspx?cc=US&lc=eng&ckey=1256668&nid=-11143.0.00&id=1256668 You can also input a square wave and use the output to calculate the impedance.

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