2 34,631 views 271 Dislike Share Save PA4MW 410 subscribers This is the second LM3886 based amplifier I have built. Some components may vary according to delivery. DIY LM3886 (gainclone) Power Amplifier No. WARNING :This product requires the use of a passive radiator of appropriate size. An MKP capacitor of 2,2uF / 400VDClocated at the input to suppress the DC component of the signal. The filtering of the transistors uses 2 electrolytic capacitors of 63V / 470μF. With a thermal and electrical stability, the 4145 is equipped with a double protection system sophisticated surge protection (proprietary technology Spike™) and undervoltages, the latter occurring when the power supply drops below 12V. ![]() ![]() Working in Class AB, and capable of 50W continuous power under a load of 8Ω, this trio of transistors can reach 400W peak, with a coherent harmonic distortion rate of only 0.1%. ![]() The amplification module APD87 is based on 3 high-performance circuits LM3886 developed by National SemiConductor.
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