LM3886 making 50W power amplifier circuit

LM3886 making 50W power amplifier circuit

LM3886 is a new high-fidelity high-power music IC with protection from overvoltage and overtemperature, which is simple and easy to manufacture. Its performance is as follows:
VCC = ± 28V OUTPUT = 68W / 4Ω, 38W / 8Ω
· VCC = ± 35V OUTPUT = 50W / 8Ω
· Peak power: 135W
· Signal to noise ratio ≥92db
· Conversion rate: 19V / us
· Intermodulation distortion: 0.04%
· 11-pin TO-220 package · Mute function · SPiKeTM protection function LM3886 has two models: LM3886TF and LM3886T, the former heat sink insulation, the latter is not insulated.
The following figure is the application circuit diagram provided by National Semiconductor Corporation:

how about it? Simple. The following is a list of components:
R1: 1KΩ 1 / 4W gold film RM: 33KΩ 1 / 4W gold film Ri: 1KΩ 1 / 4W gold film Rf1: 20KΩ 1 / 4W gold film R6: 10Ω / 3W
L: 0.7uH Use a Φ1 enameled wire to make 4 turns on the signature pen, and remove it. Ci: 10uF / 35V tantalum capacitors, all other capacitors are 100uF / 50V, electrolytic capacitor potentiometer is 10KΩ

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