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| The circuit below is a transistor amplifier stage. This circuit will provide high quality audio and is easy to build. There are no special requirements except use the exact resistor values so the transistor will be properly biased for lowest distortion. The input and output capacitors can be any value from 10mfd to 100 mfd. Use capacitors rated at least 50VDC. Also, make sure you use a power supply in the 30VDC to 35VDC range or the transistor will not be properly biased. This design operating voltage should provide plenty of headroom to allow operation of output levels up to 0db and be better than 20db below clipping. The gain of the stage is about 20db depending on input and output loading. Add stages in series for more gain. Do not add a capacitor across the 680 ohm emitter resistor. You might get more gain but you will spoil the natural negative feedback of the design and distortion will increase. |
TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT
TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT
TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT
TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT - TRANSISTOR AMPLIFIER - AMPLIFIER CIRCUIT