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  1. shiva garg1

    HOW REFLECTIONS TAKE PLACE IN TRANSMISSION LINES

    HI EVERY BODY...         please explain me how reflections take place in ckt when matched load is not connected to it....also explain me physics behind it.... thanks in advance... bye
  2. shiva garg1

    Set up time and Hold time

    Thanks for reply........i have read that max frequency of sequential ckt. depends upon on set up time not on hold time....is there any condition in which max frequency depends upon both on set up time and hold time...what is this condition and what will be frequency in that case. My second...
  3. shiva garg1

    Set up time and Hold time

    hello evrybody....   plz tellme what is origin of set up time and hold time...i mean why there is requiremnt of set up time and hold time.....i hope i made myslf clear...
  4. shiva garg1

    IR receiver

    sorry,audioguru i did nor get u..can u tell me in detail what u mean
  5. shiva garg1

    transistor projects

    can anybody tell me project based on transistors which can really help me in understanding  these devices...
  6. shiva garg1

    IR receiver

    yes...my circuit is working . i can transfer 2500bps by ir and thanks to audio guru and waferstar because the pinpointed the right problem when i used the bypass capacitor circuit start working.......now let me explain my circuit then i will ask anpther question . i genrated 38khz ouput from 555...
  7. shiva garg1

    IR receiver

    although author has recommend bypass capacitor but i did not use it because i am using supply from company made power supply and author has directly taken output without the use of capacitor between output and ground...will these capacitors solve my problem....and i will try to paste my circuit...
  8. shiva garg1

    IR receiver

    hello every body i am working on ir transmitter based on 555 timer and ir reciver based on vishay TSOP1738 receiver modeule..transmitter is working fine giving 65%duty cycle pulses of ir radiation at 38 khz ..my problem is reciver whose output and associated problem is shown in attachement...
  9. shiva garg1

    IR TRANSMITTER

    Hello everybody i am working on IR transmitter based on 555 timer and i am succesful in making it but i want to use some other timer because  frequency response of 555 timer is not stable. So can any one suggest me some other timer Thanks in advance
  10. shiva garg1

    Photodiode Amplifier

    hello every boby nyquiest does say that sampling frequeny should be atleat twice.but practiaclly it should be 5 times.
  11. shiva garg1

    DIGITAL FILTERS

    SIR I am still unable to understand plz explain me with the help of block diagram
  12. shiva garg1

    DIGITAL FILTERS

    Hello audioguru as far as i know signal is converted into digital signal by sampling it at a particular frequency,so in digitlised signal there is only one frequency which is sampling frequency,so how they seprate different frequencies components of original signal from digitlised signal
  13. shiva garg1

    DIGITAL FILTERS

    What are the digital filters.Is it possible to seprate low,medium,high frequency components from the digitlised signal.
  14. shiva garg1

    c programing of 2*16 lcd

    can any one help me in programming the 2*16 lcd using c-language.I have connected lcd to the printer port of my pc.
  15. shiva garg1

    OUTPUT IMPEDANCE

    AUDIOGURU, how can i measure the output impedance by injecting a small signal at output through resistance and meauring small resulting signal at amplifier output .Can u plz explain me by simple ckt diagram.Am i right that due to small output impedance amplifier can drive small load without...
  16. shiva garg1

    OUTPUT IMPEDANCE

    In all analog cicuits we hear about output imedance. What is the need of output impedance and what is its physical meaning.
  17. shiva garg1

    Electronic Stethoscope

    I am using electronic workbench.
  18. shiva garg1

    Electronic Stethoscope

    Thank you audioguru for your corrections.I will try to implement them,but i do not understand why this circuit work well on computer.
  19. shiva garg1

    Electronic Stethoscope

    I MADE THIS CIRCUIT THRICE BUT IT IS NOT WORKING.WHEN I USED SIGNAL GENERATOR INSTEAD OF MIC IT DID NOT GIVE OUTPUT, WHEN INPUT IS GIVEN AT INPUT OF 2ND OP AMP IT GAVE OUTPUT VARYING WITH FREQUENCY.HOWEVER OUTPUT WAS NOT IN ACCORDANCE WITH COMPUTER DESIGN(ACTUALLY I MADE THIS CIRCUIT ON...
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