low noise 4x amplifier

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    Low Noise 4x Amplifier

    This circuit will amplify a signal by a factor 4. It can easily be powered by a 9V battery. No circuit board needed if assembled as follows : PARTS LIST: Unless otherwise stated, resistor wattage = 0.25W. R1 = 22KΩ R2 = 100KΩ R3 = 10KΩ C1 = 10µF/10V T1 = BC549 or BC149
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