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    Controlling a USB webcam wirelessly??

    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...
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    Problems with three wheel Driving Mechanism

    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...
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    Transferring artwork on to a PCB

    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...
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    Class A amplifier Formulae help!!!

    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...
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    Inputting a signal to a Two Way Radio

    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...
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    Peak Inverse Voltage of a rectifier

    Hi guys! i want to ask you about the term PEAK INVERSE VOLTAGE of a rectifier what exactly it is?? and which one is good for us Low Peak Inverse Voltage? High Peak Inverse voltage?
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    Ball Firing Canon

    Hi guys! well! i want to make a canon that should be able to fire tennis balls upto some height. lets say upto 80 cm above the ground. it should form a projectile of the ball. I want to use it in a robot, i just want ideas on how this cannon can be made! thanks in advance! good bye!
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    Design with Operational Amplifiers and Analog Integrated Circuits,

    Hey anyone has this book ?? Design with Operational Amplifiers and Analog Integrated Circuits, by Sergio Franco if yes then plz provide the link for it! your earlier help shall be highly appreciated! take carez! Good Bye!
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    Basic Practical COncepts???

    Hi guys! well! i want to know how the following components work in a circuit, and why we use them, and how to determine their values for a particular circuit?? 1) Pull Down Resistor 2) Pull Up Resistor 3) Decoupling Capacitor I shall be very thankful to u for this act of kindness. Take...
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    sending a beep into the telephone line???

    Hi guys! well! im making a circuit in which im using a 555 IC in astable operation. The frequency is about 152Hz which is an audible frequency. The output pin that is pin3 of 555 IC is connected to TIP of the telephone line. The idea is this that when the supply would be connected, the IC would...
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    555 monostable Operation problem

    Hi guys! well! im using 555 IC as a monostable multivibrator. What im using values are R=690kohms C=10uf and i have connected trigger pin i.e. pin2 to the ground. Now i think when the circuit will be on, the pin3 should give me a pulse of width around 5-7 sec and then the output on pin3...
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    Hartley OScillator

    Hi guys! please explain me how Hartley OScillator Works: i shall be thankful to u for this act of kindness: thanks in advance!
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    are these pins shorted????

    HI guys! well! im using the IC CM8870 in a telephonic project. I made some circuit, in which this IC was not working properly, i checked my connections and i found that pin 8 and pin 9 of this IC are shorted internally. I checked its block diagram (given below) and dint find any reason for that.
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    Relay Switching Problem

    Hi guys! well! im using a 6V double throw relay. It is NORMALLY CLOSED (NC). Now what is happening actually that when i use it openly, it switches properly. But when i connect the load to be switched, like im connecting a 220ohms resistor, then it only connects that terminal of the relay which...
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    Want to power up my programmer

    for full version plz visit this Hi guys! i want to build a simple PIC programmer that requires 13.5 V. This can be to about 14-16V. And it also needs regulated +5V at some of its pins. The diagram above shown is the power supply setup used for this programmer. There are two power solutions...
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    12V to 24V DC to DC converter required...

    hi guys! well i want to run a motor that will be requiring 24V DC. I have a battery which is 12V DC and 7.6Ah. I want to convert this 12V to 24V in order to run my DC motor. What IC should i use or what method should i follow. If you are giving me any solution then please keep this thing in the...
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    using MOSFET driver IC in a circuit!

    Hi guys! well im building an H-bridge circuit for driving my powerful 12V 5A motor. Im using the following block diagram for my circuit: Okz now, Im using IRF9540 as P-channel and IRF540 as N-channel. what i have seen that P channle gets on when we apply 0V to its gate and it gets off when...
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    H-bridge Help required urgently

    Hi guys! well! i was getting a bit off topic according to the theme of the datasheet and part request forum so i better start the topic here now. Guys! im facing a huge terrible problem in H-bridge circuits. and i donot know what to do with it. Actually, i want to run a DC Motor with my...
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    H-Bridge COmplementary Transistors--Plz help in selecting them

    hi guys! following is the picture of the H-bridge i want to use. Please keep this thing in the mind that im ussing this H-bridge for some really powerful motors that will be requiring around 4-5 A of current each.  So. i will be using one circuit for each motor. But the problem is this that in...
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    Class D amplifier Applications

    Hi guys! well! i want to ask you a very simple question. which are the devices or applications which involve Class D amplifiers in their circuitry. Please provide me any link to their block diagram so that i can figure out how class D amplifier is used in them Please make it as soon as...
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