Search results

  1. trigger

    bonding

    compare die bonding on PCB and IC fabrication ??
  2. trigger

    I'M Lost!

    I have changed my web surfing using firefox for 2 months.... so far no big problem except some required IE only webpages. And there is no problem in here. And I really found out that I am free of spyware  (I am using spybot:search and destroy  to scan) ..... Previously using IE will result at...
  3. trigger

    Cleaning the CCD sensor of a digital camera

    Agree tp Ante..... Open the case may cause more dirt inside.... which may be a disaster.....
  4. trigger

    Robotics

    robots is a combination of electronics, porgramming and mechanical  monster..... :P What Kevin refer to is the program codes on the MCU to control the robots.
  5. trigger

    COMPUTER SYSTEM

    ISA is no longer commonly available in nowadays motherboard.... except some industrial mini size controller board and do not "visually" distinguish the bus .......... get yourself a manual of the motherboard..... it will clearly state what are these!
  6. trigger

    Help with simple RF switching application

    For lamp switching, I suggest you to use diac+triac for switching on/off, where you can find many of such circuits in the topics of dimmer switch. So, is there any meanings on the serial port data? If yes, I think you may need MCU to interprete the serial signals at receiver side . For...
  7. trigger

    Help with simple RF switching application

    If you have block diagram of the system, there is not much difficulties on building each of them. And what is the problems you are facing in using IR?? Is the lamp are AC supplied?? RF transmitter and receiver? Frequency? AM? FM? Distance? You have to clarify your mind on these questions (or...
  8. trigger

    fm tranismiter

    max2606 center frequency is adjusted by the external L... can vary from 45MHz to 650MHz
  9. trigger

    How to view and print PostScript files?

    acrobat reader 7.0 can read ps file.... I found it some time ago
  10. trigger

    How to view and print PostScript files?

    use ghostscript and ghostview to print ps file
  11. trigger

    Need help for a heartbeat detector!

    I still can't figure out how an LED and LDR can measure the heartbeat................. by what theory it is based on?? Anyone can explain this? ??? ???
  12. trigger

    Increase range of RF Remote control!

    It is normal for which this circuit is a low power RF transmitter circuit. As Ante said, RF amplifier is needed and need to care about the transmitter power. Also you can do something on the reciever part. A mosfet stage can help to increase the range .
  13. trigger

    FM WAVE PROPAGATION

    no, high frequency do not mean high bandwidth. It depends on the modulation, the coding , the filtering and the processing power on both transmitter and receiver (in case of digital communication). I prefer high bandwidth more than high frequency.
  14. trigger

    FM WAVE PROPAGATION

    wavelength and the media reflection/refraction ratio.
  15. trigger

    Electronic Stethoscope 2

    Also some microphone frequency response will be poor at low frequency. OT:.... better not to use all capital letters..... that just like shouting and rude....
  16. trigger

    Very basic question from a newb

    I think your meter got some problem.... My 12V DC fan (used inside a PC) will run pretty fast and dangerous (I cut my finger once with it......... :P ) with its input voltage at around 12V.
  17. trigger

    Pb-free soldering

    oh.... if the Pb solder and Pb-free solder will mess up, the most problem would be happened to supporting engineers/technicians......... Shops now still selling Pb solder... at least for me, I still got 2 big roll at home........ >:(
  18. trigger

    helping in testing a bcd decoder

    You can use dip switch ( in this case 4 channels) at the input ports with resistors as current protection.
  19. trigger

    Frequency Detector

    I think it is not that easy to build in just using bandpass filters. And the sound frequency generated by the vehicles are not always the same and you have to take care of the "sound" generated by other sources, these are the most critical points! May be you have to analyze the sound frequency...
  20. trigger

    Upload error!

    I think this one: IZArc is a free software to decompress files. Follow this link: http://www.izsoft.dir.bg/download_izarc.htm
Top