200 Watt MOSFET Amplifier

Published:2013/3/13 1:03:00 Author:Ecco | Keyword: 200 Watt, MOSFET Amplifier | From:SeekIC

This circuit have Power output is 200 Wrms in 8 ohms or 350 Wrms into 4 ohms. Less than 0.02% distortion, damping factor greater than 300, the ratio signal / noise 112 dB (A balanced at full power), input sensitivity is 1.2 volts (200 W / 8 ohms). Current source of + / – 1 mA carried around T5 and T6. Diodes D1 to D6 allow the use of low-noise type BC560C and BC550C transistors, transistor T7 to T10 is the driver stage. Potentiometer P1 allows setting the quiescent current of 100 mA per output transistor. Symmetrical power entrusted to the large transformer 625 VA, 2 * 51 volts + bridge rectifier and 4700 uF capacitor 6, which gives the output voltage of + and – 70 volts per rail.



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