Specifications
20W Audio Amplifier kit is based on LM1875 IC.
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Power supply - 48 VDC
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Output - 20 W, 4 Ω
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Very low distortion (THD - 0.015%), good channel separation and ripple rejection
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IC built-in thermal, short circuit protections
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Internal output protection diodes
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Terminal pins for connecting input
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Power Battery Terminal (PBT) for easy power supply and speaker connection
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Power-On LED indicator
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Heatsink for IC
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Four mounting holes of 3.2 mm each with nut and stud
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PCB dimensions 48 mm x 60 mm
Schematic
Parts List
PCB
Source: Electronics Lab
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