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14W Class A Amplifier Circuit with 2N3055 This class A amplifier circuit requires a preamp as it hasn't got much gain. Requires large heat sinks and a large transformer and a source of great power and wiring carefully, but the end is very simple and sounds great. The zener diode disclaims any wave from the power supply, but still just want a wave of 10mV max. The ripples reaching the entrance is amplified, so the zener get rid of that, but there is still dominated him to reach the power stage. Many early amplifiers operated in Class A, but as 10W power output rose above the problems of heat dissipation and design of the power supply caused most manufacturers to turn to the simplest, arrangements more efficient class B and put up with the consequent decrease in the perceived quality of output. Why Class? Because, when biased in class A, the transistors are always on, always ready to respond instantly to an input signal. Class B and Class AB output stage requires a microsecond or...

Simple and low cost. The optimal accumulation voltage is about 50V, but this amp assignment from 30 to 60V. The acute ascribe voltage is about 0.8 – 1V. As you can see, in this architecture the apparatus accept a big tolerance, so you can body it about of the components, which you acquisition at home. The and transistors can be any NPN blazon ability transistor, but do not use Darlington types… The achievement ability is about 60W. Click to view larger 2N3055 Power Amplifier Circuit Schematic Figure - capacitor C1 regulates the low frequencies (bass), as the capacitance grows, the low frequncies are accepting louder. - capacitor C2 regulates the college frequencies (treble), as the capacitance grows, the college frequencies are accepting quiter. - this is a chic B amplifier, this means, that a accepted charge breeze through the end transistors, alike if there is no arresting on the input. This accepted can be adapted with the 500Ω trimmer resistor. As this accepted incrases, the comple...