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 ).

 

 

Just click to download the Layout in Tango PCB format

 

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.

 

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