D.I.Y. Audio And Speakers |
60W Amplifier |
In first place I want to congratulate Rod Elliot for the great Web Site he has.
This project is based on Rod's Project 03.
I've turned it in a simple MosFet amplifier.
The schematic is in fig.1.
Figure 1 - The 60W MosFet Amplifier Schematic
And here is the PCB and the component Layout (fig.2 ).
Figure 2 - The PCB and Component Layout
With a little modification, and after burning out 8 transistors, I've reached the best output signal.
In a short time, I'll put here the oscilloscope traces.
As an suggestion of Rod Elliot, I've changed the output transistors, as seen in fig.3.
Figure 3 - Other output transistors
This give another output waveform, more aproximate to the real sinusoid.
The audio signal listened is softer in higher frequencies.
The power suplly is made by a simple toroidal transformer with an output at least of 3 Amp in 2x22V.
The filter caps must be at least 10.000uF for each line.