Power Amplifier D200 is quite good and reliable in its performance has a power output of about 200Watt 8Ohm. Power enough qualified to drive 12-inch subwoofer speakers. And also no less interesting, this power amplifier is perfect for you who just started (beginner) assemble class D power amplifier. By composing, the circuit of Op-Amp TL074 as a comparator circuit. audio signal and triangular wave then driven again by the driver transistor BD139 and BD140. And the final will be processed by the IRF9540 and IRF540 MOSFET transistor. Then the signal is still shaped square wave will be filtered by a low pass filter circuit to become a sine wave. An output will be forwarded to drive the speakers.
Below the full schematic of D200 Class-D Amplifier, simple Class-D Amplifier and suitable for a beginner of Class D Amp Fans DIY Audio.
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Resistor 1/4 W
47k 1x, 1k 4x, 33k 1x, 2k2 3x, 10M 1x, 56k 1x, 100k 1x, 470r 1x, 22k 1x, 220r 4x, 680r 2x
10r 1k, 2k2 2x
470n 1x, 470n/250v 1x, 820pf 1x, 330pf 1x, 100u 16v 2x, 220u 80v 2x, 100n 275v 1x, 100n 2x
BD139 2x, BD140 2x, 2n5551 1x, 2N5401 1x
IRF9540 1x, IRF540 1x
Core T120/ T130 20-30uH
PCB Layout Design D200 Amplifier Class-D diyaudio
This Power Amplifier is more efficient than power amplifier conventional. Power supply voltage need for this amplifier about +45VDC GND -45VDC. Use the good power supply or you can use switching power supply for audio that has minimum 10A ratings.