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    BT-693 speaker system

    Hi Logan Probably on the motherboard, else it is in a slot! Dont you see that, by looking at the rear side of your computer? The CPU is an IC ! //Staigen
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    BT-693 speaker system

    Hi Ante If the speaker was powered when it happend, and maybee a few hours after that, i belive theres not gonna be more damage to it than there already is! //Staigen
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    BT-693 speaker system

    Hi Logan Of course the computer have a soundcard, else you won't hear anything! The CPU dont have a soundcard! //Staigen
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    BT-693 speaker system

    Hey Ante, dont you think he should do this simple test first, before dismantling anything? Probably it is the speakers amp or psu that is at fault, but you never know until you test. //Staigen
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    BT-693 speaker system

    Ok, do the test i told you, than we know if it is the speaker or the soundcard! //Staigen
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    BT-693 speaker system

    Hi Logan How is your speaker system connected to your computer? Via USB ? //Staigen
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    BT-693 speaker system

    Hi Logan How is it powered? If it is a wallwart(or what the name for it is), then it can be that one that is at fault. Also try to turn up the volume to max, and take a screwdriver and touch the inputs, if there is some sound, it shall be some highpitched, 50 or 60 Hz hum, your speakers is...
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    DIODE QUESTION

    Hi Um...Me123 No question is too dumb, dumbness is to not ask! ;D Now to your question! You didn't supply us with enough information to properly answer your question! How much current through the diode? That will determine the diode. Up to 1 Amp a 1N400x diode will fit nicely, up to 3 Amp a...
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    I Need help for these Capacitors

    Hi Fatal_Byte As Audioguru said the first two is probably that! ;D ;D The 3rd is 47uF/35Volt radial electrolytic cap the 4rth is a 6-35 pF trimmer cap Where did you found this, if you tell us, we can make an extra check! ;D //Staigen
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    Resistance and Resistivity

    Hi Diarmuid There are already some good books here on this site, E-Books(PDF-files, some are RARed)! Look at the "Articles" area at the top of this side! Ante have uploaded some too, look in the "Electronic Resources" area here in the forum! They dont cost you a lot! //Staigen
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    VHF AMPLIFIER (PLZ ANSWER)

    Hi Its not that simple, the question can't be answered that easy. It might work or it might not work! What is your antenna for instance? And how far is the radio stations? The power they transmit at? Your topology? Nothing can stand up against a good antenna arangement! You should start there...
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    need help with rotary potentiometer

    Hi The link dont work! //Staigen
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    Resistance and Resistivity

    Hi U stands for Voltage and I stands for Current, but Dont you think its time to read a beginner's book about elektronics first? //Staigen
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    Resistance and Resistivity

    Hi Diarmuid Then you have to learn Ohms Law! It goes like this:
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    need help with rotary potentiometer

    Hi zefiris2K5 This pot, where did you found it, on some machine or something? The pic is not very clear, how many connections do it have, and where are they? Can it be some kind of RPM governor, that is worn out, if it's output is unstable? //Staigen
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    Basic Transistor Circuits questions

    Hi What is Q? Quiescent? Usally Q means quality in electronics, used in resonant cirquits and filters! The inverse of Q is damping. The quiescent point depends on the output demands, if you need more than 1 mA out, than a quiescent current of 1 mA is a little bit low. Also, if you need an...
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    VHF AMPLIFIER (PLZ ANSWER)

    Hi Hehe, so i am not able to answer this question, hehehehe But, there are 3 projects dealing with amplifying signals in the 86-108Mhz range at the RF Cirquits Projects side. One of them try to amplify these signals, using miller integrators, and i dont think that is a good design. Ok, i leave...
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    I didn't find this sensor!!

    Hi kuwaiti badr, welcome to this forum, nice to have you here ;D Cant you read, it is a piezo speaker, used as a sensor here. The speaker comes from a piezo buzzer. I belive you can use the piezo ringer from a modern telephone as well, or an another piezo speaker. //Staigen
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    Basic Transistor Circuits questions

    Hi there Usally you design a transistor stage based on its output demands, voltage, current, power. Then you decide what transistor to use. The emitter voltage is usally 5-10% of Vcc, but not always. //Staigen
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    Voltage level shifting

    Hi As i suggested, roughly! And what do you say pebe? Anyone else? //Staigen
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