Search results

  1. S

    12V to 5V

    Hi guys! thanks for ur tremendous help. Well! as far as Ante advice is concerned, i have checked the datasheet of Max724/726 and found it really good. I have attached below an application diagram of it i found in that datasheet. What i want to ask here is this, that you can see in the...
  2. S

    12V to 5V

    HI Guys! well! my dear friends! Im making a robot. In which i will be requiring 5V for a motor. I have a 12VDC, 5AH battery. Now how i will supply 5V to a motor from a 12V battery. Should i use a regulator 7805. Will it be able to handle an input voltage of 12V?????? and one thing that i was...
  3. S

    Capacitor Voltage

    Thanks a lot Mr. SM2 U have helped me a lot! Regards
  4. S

    Capacitor Voltage

    Hi Guys! well i want to ask you about the voltage ratings of an electrolytic capacitpr. I want to know that why these capacitors are categorized by their voltages. Like there is a capacitor of 100uF of 12V and there is a capacitor of 100uF of 50V. WHat is the difference between the two...
  5. S

    help me in finding this output from a single op-AMP

    Hi Guys! well ! i want to use a single op-AMP with a +-15V DC supply. Remember that no other external DC supply is to be used except that. and i want to get the following output. Vo=Vi + 5 now what i have in my mind is this. That i make a voltage follower that is a unity gain amplifier. and...
  6. S

    Op-Amp with a load resistor..Plz help

    Hi Guys! well! im just a bit confused here. i want to ask you a question: just have a look at the fig below which i have posted. You can see a load resistor "RL". my question is that whenever i studied this inverting configuration of opAmp, there is no load resistor given for it. So, now...
  7. S

    how to design a remote control????

    Hi guys! well! i want to ask you that if i want to design a remote control for my toy car, or a robot, what essential things do i have to study. ??? thanks in advance!
  8. S

    i want an idea!!!!! please help me

    HI audioguru! sorry if i have violated the rules here. Okz now lets get back to the 1st circuit whihc you have presented. I remember that t his circuit u recommended to me at that time whihc i was able to make successfuly by the grace of God. okz now i have some questions in my mind in...
  9. S

    i want an idea!!!!! please help me

    Hi guys! i really donot know what sort of laziness you people have seen in my post. There are lots of GURUs roaming here, so if i would discuss with them about my project, what is so odd about it then. And please keep this thing in ur mind u all ELECTRONICS GODs, i never ever want u people to...
  10. S

    i want an idea!!!!! please help me

    Hi Guys! well i have to make a project from Power Amplifers. Now i want you to give me some idea that is somewhat good, unique and highly implementable. I shall be thankful to u for this act of kindness. Take carez Good Bye!
  11. S

    please help me find this book

    Hi Guys! well can you tell me where this books is available on the internet as a free download: Design with Operational Amplifiers and Analog Integrated Circuits by Dr. Sergio Franco thanks in advance
  12. S

    please answer these two questions:

    Hello Guys! thanks a lot for your precious hot discussions. But i think that i should have clarified question 1 MORE. Well my dear friends, im just asking you in terms of entropy generation that which energy is more useful. Obviously, we cannot use electrical energy everywhere. But once i...
  13. S

    please answer these two questions:

    hi Guys! well! i want to ask you people two very important questions: 1) Why electrical energy is prefered over other forms of energies? 2) What are electrical machines. If you think that electrical machines convert electrical energy into another form of energy or vice versa, please keep...
  14. S

    working of negative feedback

    Thanks a lot audioguru! As a final conclusion plz check out my following lines whether they are correct or not: A negative feedback is used to decrease the HIGH GAIN of an Op-AMP to a suitable value. Because the open loop gain of an Op-Amp is so high that even the noise signals can be...
  15. S

    working of negative feedback

    Hi Audioguru! thanks for your help. But im still having some problems in understandin your above quoted line. what do u think if a change of 1.2V occurs in the input signal., it gets clipped at the output. Now dont u think that negative feedback gets failed here. Or should i say that this will...
  16. S

    working of negative feedback

    Hi Guys! welll! taking an example of an OP-AMP, i want to ask you that it it said that a negative feedback is used to 1)stabilize the voltage gain even if there occurs some change in the input signal voltage. 2) to decrease the gain of the OP-AMP so that it cannot go into the saturation...
  17. S

    how to find out the frequency of an amplifier

    Hi audioguru! it looks like that perhaps u didnt get my question. Well! my dear teacher! i want to ask you that how i will know the frequency with which my amplifier is working so that i can select the value for my capacitors. U remeber that LM380 amplifier circuit. There u told me to use...
  18. S

    Teleconferencing please help

    Hi Guys! well! i have seen this circuit over some site. this circuit will enable one person to talk to two different persons on different telephones simultaneously. I can explain it like this suppose that "A" calls "B", B recieves the call and puts it on hold and then dials C on another...
  19. S

    how to find out the frequency of an amplifier

    Hi guys! well! i have a question here. How i can find out the frequency of an amplifier in order to find the Xc of the bypass and coupling capacitors to be used in it. ? please help me as soon as possible. thanks and Good Bye!
  20. S

    Laser Communication

    Hi audioguru! thanks for that valuable information. Now here i want to point out one thing that where is the laser diode in this circuit? there is a simple laser torch 3V powered. So if the circuit is supplying it 3.8V then i think it should work. Please explain this point. Secondly! i will...
Top