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    Guitar pre-amplifier to amplify to line level

    would the KEMO #M40 pre-amplifier module be ok to amplify a guitar output to line level so i can play my guitar thru a normal amplifier when I dont have access to a proper guitar amp. here is the link for it...
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    AT PC power supply only putting out 10V between 12+ and GND

    i have a old 220w computer psu, so old that its an AT, and was built in '94, im using it to power my 12w x 2 amp that usually is in my school bag with the speakers, but im sick of charging the battery all the time at home, so i rigged it up to this PSU, but i measured the voltage between 12v+...
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    using computer speaker amp for portable sound system

    now i know i have the system thats in my school bag (the 12w x2), but i need one thats smaller, i have a small amp pcb from a pair of multimedia speakers. it has the usual tone and vol control pots on it, but, its made to run on 12v AC from the mains transformer, but right after where the...
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    do inverters work how i think they work?

    ok, this is how i think a 12v to 240v (or 120v for the US) ac inverter works 12 volts goes into amplification circuit (solid state, and a DC-AC rectification circuit (multivibrator?) amplified and rectified current is "forced" into 12 - 0 - 12 to 120 or 240 v step up conventional or toroidal...
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    building a generator

    how do I use a standard 240v single phase ac motor driven by a petrol engine to create 240vac between the active (hot) and neutral wires of the motor? if i got a 2400w motor and drove it at the appropriate speed would it push out the full 10 amps that it would normally draw. (maximum capacity of...
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    My 12 watt x2 stereo amplifier

    Hey ppl I'm ben and finally built my first proper amplifier, which is just built into a plastic jiffy box, with a 10k double gang pot for vol and runs off of a 2.2Ah 12V SLA battery, the amplifier modules im using are made by KEMO in germany, i picked them up for AU$23.95 each here, all up the...
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