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Recent content by JimLo

  1. J

    OMAP2420 VS OMAP2430... WHAT'S THE DIFFERENCE?

    omap2420 vs omap 2430 just noticed that the omap2430 has not got the C55X DSP PART INTEGRATED IN THE CHIP. SHOULD THERE BE ANY DIFFERENCE OF FUNCTIONS BETWEEN THE OMAP2430 AND 2420? MANY THANKS.
  2. J

    TI OMAP5912 / OSK / CCS/ DEVELOPMENT TOOLS

    MY COMPANY IS GOING TO DESIGN AN PDT SIZE PRODUCT THAT USE OMAP5912 AS ITS CORE. is CCS FOR OMAP5912 the same as CCS FOR OMAP5910? IS CCSTUDIO INCLUDED IN THE STARTER KIT? HOW MUCH IS THE suite of development tools for WINDOWS?(NOT LINUX)
  3. J

    how does a digital camera work???

    Hi,there do you know how a digital camera works??? actually, what i want to know is whether a digital camera has a dsp dealing with digital imaging signal. and it obviously has a simple OS that provide simple control functions for users. could this OS be embedded in the DSP as well...
  4. J

    Could any DSP be embedded with an OS, which can do following

    thanks... do you know how a digital camera works??? actually, what i want to know is whether a digital camera has a dsp dealing with digital imaging signal. and it obviously has a simple OS that provide simple operation functions for users. does anybody have any block diagram or schematic of...
  5. J

    Could any DSP be embedded with an OS, which can do following

    As I know the typical dsp application is to put the processor after an ADC to manage the digital signal...(filtering typically) what i want to know is whether there is a dsp that could be embedded with an operation system.(like windows 2000) ?? and then the system could be linked directly to...
  6. J

    How to generate a -12V DC voltage?

    how to generate 12v Could anybody help me to understand following parameters? any schematic diagrams?
  7. J

    How to generate a -12V DC?

    the p channel mosfet need a minus gate voltage..... not quite understood... could anybody explain or draw a schematic diagram? many thanks.
  8. J

    how do you get the price of any components

    great , thank you. +3 Points anyothers?
  9. J

    how do you get the price of any components

    is there any professional webiste or search engine that could be use instantly? many thanks...
  10. J

    what are these transistor used 4?

    there are many typical connections that include transistors. i saw some were used like follows. what are they used 4? (following pics are provided by IanP)
  11. J

    What parameters should I look on when comparing MOSFETs and JFETs?

    MOSFET ? JFET ? thank you all for great helps could i know that for a certain Vgs, will Rds remain constant? is it independent to the Vds?
  12. J

    What parameters should I look on when comparing MOSFETs and JFETs?

    Dear Senior Engineers. for FET, what are the following parameters? thank you very much. V(BR)DSS (volts) IDSS (milliamps) VGS(off) (volts) Transconductance (kS) rDS(on) (ohms) PD (milliwatts) TJ (C) Package Type Packing Method if there are two MOSFET made by different manufacturer...
  13. J

    software for drawing electical schematic

    I tried to search using google for several days and found some useful tools. keyword: protel orcad freedownload crack ( since i just told you my experience, i am not responsible for any virus risks. actually, people don't put virus in this kind of huge size application softwares.)
  14. J

    which kind of relay should i use?

    thank you for helping me again. could i ask following silly question? according to above diagram, could i know the pin connection of the relay? plz see follow pic.. should PIN 1 be connected to the high voltage? are all the pins connected right? if so, any requirement for the input...
  15. J

    which kind of relay should i use?

    THANK YOU, YOU ARE HELPFUL, 3 POINTS HAVE BEEN ADDED TO U. emh... i think , the average current of my dc motor is low at around 50mA.. the starting peak current is over 1A. so could the following pcb relay G6H-2 be the possible choice? How do you think about it? P.S. should the pin1 and...

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