I have attached below a recently developed prototype project. This is an audio amplifier 100W/4Ohmi in two versions:
- M100A with transistors MJL3281/1302;
- M100B with transistor MJ15003/15004.
In PDF attached below you can see the two versions PCB.
Some useful indications for the correct construction of the project:
- To achieve PCB, print one page (5 or 7) on a glossy photo paper using a laser printer. Set the print menu option "Actual size" and the page size will be A4 landscape;
- Pads hole diameter of 0.6 W resistors and transistors in TO-92 case is 0.7 mm;
- After you have made the PCB holes, above all, fit jumpers (J1...);
- After installing jumper, then mount resistors and other electronic components.
The project can be downloaded from here (I could not attach it on http://forum.allaboutcircuits.com because the project has more than 1Mb):
http://www.mediafire.com/download/19j7f9aov9x4d3k/M100+-+100W+Hi-Fi+Audio+Amplifier.pdf
I attached an image with simulated circuit diagram of the amplifier.
- M100A with transistors MJL3281/1302;
- M100B with transistor MJ15003/15004.
In PDF attached below you can see the two versions PCB.
Some useful indications for the correct construction of the project:
- To achieve PCB, print one page (5 or 7) on a glossy photo paper using a laser printer. Set the print menu option "Actual size" and the page size will be A4 landscape;
- Pads hole diameter of 0.6 W resistors and transistors in TO-92 case is 0.7 mm;
- After you have made the PCB holes, above all, fit jumpers (J1...);
- After installing jumper, then mount resistors and other electronic components.
The project can be downloaded from here (I could not attach it on http://forum.allaboutcircuits.com because the project has more than 1Mb):
http://www.mediafire.com/download/19j7f9aov9x4d3k/M100+-+100W+Hi-Fi+Audio+Amplifier.pdf
I attached an image with simulated circuit diagram of the amplifier.
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