2n3055 power amplifier 60w electronic circuit diagram
DESCRIPTION
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9/17/2015 2N3055 Power Amplifier 60W electronic circuit diagram
http://www.freecircuits.com/circuits/audio/3/2n3055poweramplifier60w 1/2
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2n3055 Power Amplifier 60w electronic circuitdiagram
Simple and low cost. The optimal supply voltage is around 50V, but this amp workfrom 30 to 60V. The maximal input voltage is around 0.8 1V. As you can see, inthis design the components have a big tolerance, so you can build it almost of thecomponents, which you find at home. The and transistors can be any NPN typepower transistor, but do not use Darlington types... The output power is around60W.
Some comments:
capacitor C1 regulates the low frequencies (bass), as the capacitance grows, thelow frequncies are getting louder. capacitor C2 regulates the higher frequencies (treble), as the capacitance grows,the higher frequencies are getting quiter. this is a class B amplifier, this means, that a current must flow through the endtransistors, even if there is no signal on the input. This current can be regulatedwith the 500Ω trimmer resistor. As this current incrases, the sound of the amplifiergets better, but the end transistors are more heating. But if this current decrases,the transistors are not heating so much, but the sound gets worse...
author: Jacint Chapo
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9/17/2015 2N3055 Power Amplifier 60W electronic circuit diagram
http://www.freecircuits.com/circuits/audio/3/2n3055poweramplifier60w 2/2
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