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    Laser Communication

    Hi guys! well im posting below two diagrams. The 1st one is of the transmitter and the other one is for the reciever. The laser light will be used as the signal carrier. My question is this that as it is written in the diagram that the condenser mic is to be used. Now is it correctly written...
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    simulating circuits with ICs in orcad

    in which libraries are u searching in? remember that there are two libraries. One for Capture and the other for PSPICE. The components given in the PSPICE library are able to get simulated. But the ones giving in Capture libraries cannot be simulated.
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    designing a power audio amplifier with OP AMP

    Hi Audioguru! I Did it by the grace of God. The amplifier is working very fine on Veroboard. Thanks a lot Audioguru. I will be very happy if u will help me in understanding this circuit.! thanks a lot again
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    designing a power audio amplifier with OP AMP

    Hey Audioguru! sorry Boss! it was my mistake! im thankful to you for telling me the difference between the twos. According to your difference, im using an electret mic. So my dear friend! today im going to solder my components on a veroboard. Then i will tell you if it will not work. Please...
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    simulating circuits with ICs in orcad

    Hi fafa! well my dear ! this is the reason why i told you to stop using OrCAd  for simulation purposes. OrCAD doesnot provide you updates regarding PSPICE libraries. You can check their website as well! www.orcadpcb.com if you find anything tell me abt that. Try using PCAD, that is...
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    designing a power audio amplifier with OP AMP

    hi again! well! i have connected all the ground pins of LM380 with each other to the ground. But still im facing one strange thing: this is happening almost regularly that whenever i press LM380 with my thumb on the breadboard, the noise stops and all become quiet. but when i release i hear...
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    simulating circuits with ICs in orcad

    Hi fafa! Happy new year! well! you should use the PSPICE libraries for simulating circuits in OrCAD. but i have checked myslef there is no TL494 IC present in them. Remember that OrCAD libraries doesnot have a nice collection of ICs and transistors. It is not recommended at all to use this...
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    designing a power audio amplifier with OP AMP

    what do u think making this circuit on a veroboard will improve its performance! i mean to say NOISE REDUCTIOn to a great extent and somewhat THE EXPECTED PERFORMANCE of this circuit!
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    designing a power audio amplifier with OP AMP

    Hi Audio guru! happy new year to you too! Thanks a lot for your quick response. Now my speaker is still making noise "BOOOOOOOOOOOOOOOOMMM" even when the mic is disconnected. im using a 14-pin LM380, so i think that you want me to connect all the ground pins with each other. is it? and how...
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    designing a power audio amplifier with OP AMP

    Hi Audioguru! my dear friend! i made the circuit which you have suggested above. Now what im getting is a booooooooooooooooooooom sound from my speaker continuously which increases or decreases on varyinf RV1 and volume control. Im not hearing any sound when im speaking in mic. :'( what...
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    controlling the PC with IR remote control

    Hi Guys! well ! i want to make a circuit with which i can control the computer with a TV remote control. IN the projects>PC related section of this website there is  a circuit (Billy's Plug) which im looking for reference but the greates problem in implementing that is this that the IC TSOP...
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    making a circuit grounded

    hi guys! well im making a circuit involving the PC serial port. One pin i need to ground. Now i want to ask you that how should i do that! should i just connect it to the negative terminal of my battery? or should i make this ground by some special way? if this is i have to do then how to do...
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    Variable DC Power Supply

    THanks a lot Audioguru!
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    Dual Polarity Power Supply

    Hi guys! well! i m trying to build a power supply in order to power up my operational amplifier circuit which requires around 12-15 V and 245mA of current! will this circuit be suitable for that! http://www.electronics-lab.com/projects/power/015/index.html here is its circuit diagram: now...
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    Variable DC Power Supply

    HI guys! well! i just came across this circuit in the project section of this website: http://www.electronics-lab.com/projects/power/011/index.html here is its diagram: now i want to ask you about its quality? will it work properly or not? i want a voltage of around 12-15 V and a current...
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    designing a power audio amplifier with OP AMP

    Thanks once again audioguru! i want to ask you one more question here! if i want to arrange a power supply for this circuit, the voltage should be 12-15 volts but what should be the current requirement? plz tell me this ! your early reply shall be highly appreciated! thanks and Good Bye...
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    designing a power audio amplifier with OP AMP

    Thank you very much Audio Guru! you have really helped me much! i hope that this will lead me towards  the correct design concept. Thank you very much Regards
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    difference between negative supply and ground???

    Hi Guys! well! i have seen in many circuits diagrams that there are some connections to a negative supply lets say "-5V" and some to grounds. now i want to ask you that what is the difference between them? actually i want to know it like this that while making a circuit how we have to...
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    designing a power audio amplifier with OP AMP

    Hi Audioguru! well! a bundle of thanks to you for your tremendous help. Now my dear friend! is Ron Elliot's preamp is the same whihc i have shown above: and one more question The power amplifer figure that is present on top most part, requires a mic at its input. Now can i use a mic...
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    Audio Amplifier Plz check this out

    Hi Audioguru! im thankful to you for your immediate responses. Actually i have taken this idea from a website: http://www.mines.edu/Academic/courses/physics/phgn217/lab10/lab10handout.htm here you can see that LM380 is used in almost the same configuration as i have used. Now my dear...
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