300W audio power amplifier
The output transistors are MJL4281A (NPN) and MJL4302A (PNP) with high bandwidth, good SOA (safe working area), high linearity and high gain. The driving transistor is MJE15034 (NPN) and MJE15035 (PNP). All devices are rated at 350V.
Performance:
8Ω4Ω voltage gain 27dB27dB power (continuous) 153W (240W) 240W (470W) peak power - 10 ms185W (250W) 344W (512W) peak power - 5 ms185W (272W) 370W (540W) input voltage 1.3V (2.0V) RMS1. 3V (2.0V) RMS noise *-63dBV (ref. 1V)-63dBV (ref. 1V) S / N ratio *92dB92dB Distortion 0.4% 0.4% Distortion (@ 4W) 0.04% (1 Khz) 0.04% (1 Khz) Distortion (@ 4W) 0.07% (10 kHz) 0.07% (10 kHz) slew rate > 3V/us> 3V/us
Figure 1 300W audio power amplifier circuit schematic
Figure 1 300W audio power amplifier power supply circuit diagram
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