F.H.T.S. AUDIO POWER AMPLIFIER DEVELOPMENT

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FHTS-220W-2L-MOSFET-OS

This is a model design of a high-end 400-watts audio power amplifier main-circuit for 4-ohms output-load. This model has a modern circuit topology with the advanced LTP circuit model to achieve very low output offset, symmetrical high-speed high-gain VAS, and advanced solid-state output-overload protection. The speciality of this model is designed to apply the MOSFET output-stage for handling very low output-load impedance, applies one IRFP260N N-channel power-MOSFET for each side of the output-stage.

FHTS-220W-2L-MOSFET-OS is designed to have capability to produce approximately 29.3V-peak output amplitude without clipping or produce averagely 21V RMS output if the input level reaching at averagely 0.775V RMS or 0dBU. Its optimal power handling capability is approximately 220 watts, with the output signal averagely in 21V RMS at 2-ohms output-load.

Circuit Board Design For FHTS-220W-2L-MOSFET-OS

FHTS-220W-2L-MOSFET-OS design came with single-sided PCB with size in 149.2 cm x 10 cm. The average copper trace width is 0.762 mm, in which should be able for handling approximately 100 mA DC current. The copper traces in particular parts, have width in 3.81 mm, for handling approximately 15A DC peak current.

Repository & Source Downloads

Project Repository URL:
https://gitlab.com/fhts-audio-power-amplifier/fhts-220w-2l-mosfet-os

Schematic & PCB design files bundle download URL:
https://gitlab.com/fhts-audio-power-amplifier/fhts-220w-2l-mosfet-os/-/archive/main/fhts-220w-2l-mosfet-os-main.zip?ref_type=heads