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shaiqbashir

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Posts posted by shaiqbashir


  1. HI guys!

    hope u would be fine out there!

    WEll i have somewhat an idea about which i want to know what i have to do:

    If i have a webcam which connects to the pc thru USB and i want to control it wirelessly what i have to do??

    I have some in my mind like:

    Suppose my WEbcam is present away from a distance from my PC. Now if i provide it 5VDC as POWER and GND, then i would be left with only control signals in the USB cable. I beleive that these control signals can be sent wirelessly from a PC to this webcam. What do u guys say??

    I want to use TWS-434/RWS 434 for this purpose. It is a transmitter and receiver module that works on around 433MHz. What i want to know is this that how a webcam interacts with PC?? serially?? how many control signals does it want?? and will this TX and RX pair work with it???

    Thanks in advance!


  2. Hi Guys!

    Hope u would be fine out there!

    Well! im planning to make a robot. The drive mechanism that i have choosen for that robot is a Tri-Cyclic mechanism. That is two Big Wheels at the back, both of them will be connected with one single motor. SO there will be one motor driving two back wheels. Just like in a car.

    There will be a third wheel in the front portion of the robot that will be used for steering purposes. Now i want to ask you that what are the known issues and problems with this type of drive mechanism?

    WHat motor should i use for steering? Should it be Servo or a Stepper?

    Is the steering motor needs to be powerful enough??

    What could be different problems i can face in this mechanism?

    Please tell me as soon as possible!

    Take carez!

    Good BYe!


  3. thanks MP for ur help!

    but what about that magazine paper method ??

    If i use a magazine paper for this purpose, then can i use an Inkjet printer or even in this case a laser will work only?

    Someone in that Magazine paper topic has posted that the output of a photocopier works as well. SO if i dont have a laser printer with me , can i go with a photocopy of my image on a magazine paper? will it work then??


  4. Well! i think you can go with ORCAD CAPTURE CIS for drawing this. If the required IC symbols are not present in the libraries, there is an option where you can draw your own symbols with pins setup at different locations according to yoru own choice. I have used that software myself and im sure that this will help u in drawing almost the same schematic diagram. Not though 100% same :P

    take carez!

    Good BYe!


  5. Hi guys!

    well! im trying to make a PCB at home. THe first process that i came across is how to transfer my artowork onto the PCB. I have got a simple Copper plated board with me (no photo resist present) . Now i want to use the transparency method. I have got an HP DEskjet 3920 printer. I printed my artwork on a transparency's smooth side. THen place that printed side on my PCB and then put my iron on the top (rough) side of the transparency. But nothing happens. What might be the reason of this??

    Is this is because, im printing my artwork from an INkjet printer rather than a Laser printer. Does printing with a laser printer makes any difference?

    DO u guys know any other method of transferring the artwork on to the PCB??
    Please remember that i donot want to use the Photosensitive method.

    I shall be looking forward for ur replies.

    Take carez!

    Good Bye!


  6. Hi audioguru!

    thanks for that precious simulation.

    But very sorry to say that i couldnt understand what u r trying to say with this.

    the circuit u have drawn is exactly correct. One mistake that i myself has made above is this that R1 = 4.7k not 5.7 k. so please make it correct in ur calculation.

    Please explain me what u r trying to say with this simulation diagram. I shall be thankful to u for giving me these answers which i require. Because i desperately need them.

    THanks a lot in advance!

    take carez!

    Good Bye!

    SB--



  7. HI guys!

    well! i have got two question with me. Some forumlae i know and some i dont! please help me in solving it.

    here is the 1st question:

    There is a single stage class A amplifier which has

    Vcc =20V
    Vceq = 10V
    Icq = 600 mA
    RL = 16ohms
    Ip=300mA.

    We have to find:

    1) DC Input Power
    2) DC Power Loss in load resistor
    3) AC power developed across load resistor
    4) DC power delivered to the transistor
    5) DC power wasted in transistor
    6) OVerall efficiency

    okz, now i know how to find (1) and (6). What should i do for remaining. Following im wrtitng what i think about them. Please tell me if im wrong or correct. If im wrong then what is the correct formula:

    2) P = (Icq^2) RL
    3) P=0.5 Icq x Vceq
    4) dont know
    5) dont know

    Please tell me those formulae which i donot know and also make those confirmed which i have written above.

    OKz here is another question to be considered:

    Determine the following values for the class A amplifier when operated with maximum possible output signal:

    1)Min transistor power rating
    2) AC output power
    3) Efficiency
    4) Maximum Load Power

    okz so here is what i think about these formulae:

    1) this is the power at Quiscent point. that is
    P = Icq x Vceq

    where Icq is simply the Ic of the circuit and Vceq is the Vcc/2

    2) that would be P = 0.5 Icq x Vceq

    3) Efficiency = 0.5 Icq x Vceq/ Vcc x Icq

    4) for max load power, it think i should use this formula :

    P = (Vc^2)/RL

    where i can find Vc = Vcc - Ic Rc

    where RL is the capacitively coupled Load Resistor.

    Please tell me that have i written the above formulae correctly or not. If not then what are the correct formulae.

    I shall be thankful to u for this act of kindness.

    take carez!

    Good Bye!




  8. HI guys!

    well! im trying to start a project. IN which i have to generate an audio frequency through 555 timer and this audio frequency is then to be supplied as an input to the electret microphone of a simple TWO WAY RADIO, so that it can be transmitted at certain frequency.

    On the recieving side, i want the signals coming out of the speaker of the TWO way radio, to be given to an IC. Now i have two questions:

    How to make this happened electrically

    i mean

    I want to input an audio frequency to the electret mic of a TWo Way Radio. How can i do this??

    I want to take the output from the signals coming at Speaker, and to use these signals further in my circuit, how to do that.

    Remember that no voice operation is there. Since a Two Way radio is designed for sending and reciveing voices. I just want to use the electrical signals in the way i have described. So how to do that.

    I would be looking forward to ur precious replies.

    take carez!

    Good Bye!

    SB--


  9. HI prateek!

    thanks for the explaination but there is something confusing in ur explaination.

    U said that field=electric field/distance

    what is the difference between Field and Electric Field??

    and then how can u derive the constant R from the above stated three formulae??

    please explain it again and this time in some more detail.

    thanks in advance!

    take carez!


  10. Thanks a lot Audioguru for ur help!

    but actually im asking  you to tell me the Theory of Peak Inverse Voltage.

    That what basically is this. I donot want to use it anywhere so plz dont ask me what my supply voltage etc.

    Im just asking what is Peak Inverse Voltage itself??

    How it affects the performance of a rectifier?

    It is said that a full wave rectifier has a Low PIV then a half-wave and that is the reason why a full wave is better than a half wave. I ask you why a low PIV is better than a high PIV???

    In addition to this, please tell me that what is the advantage of using a Bridge Rectifier over a full wave rectifier i.e. What is the property of a bridge rectifier that makes it preferable over a full -wave rectifier.

    I shall be thankful to u for this act of kindness.

    Good Bye!


  11. @rybitski
    HI rybitski

    thanks for the links!

    your idea looks pretty useful no doubt.

    please upload the detailed pictures so that i can fully understand what your idea is basicallly.

    @Theatronics

    Many thanks for that detailed pic theatronics.

    sorry but i still have some confusion in this picture, i want to know the plane of rotation of the bat is it rotating horizontally or vertically. And how the tube would be able to hold the ball,  your notch idea is not cleared to me properly. Please please make it cleared!
    thanks in advance!

    Good Bye!

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