68W Power Amplifier Circuit based LM3886

The following diagram is a 68W Power Amplifier Circuit diagram based on famous amplifier chip LM3886.

Components List:

R1 = 10K Ohms R2 = 10 Ohms 2W see text R3 = 10 Ohms R4 = 47K Ohms R5 = 220K Ohms R6 = 10K Ohms R7 = 100K Ohms L1 0,7uH IC1 LM3886

C1 = 100NF C2 = 100NF C3 = 100NF C4 = 100UF C5 = 100UF C6 = 4,7UF C7 = 100UF C8 = 1UF

Amplifier should be fed by source symmetrical good filtered of + 34 and – 34 volts. R2 and L1 is a resistor of 10 ohms / 2watt coiled with 10 to 12 you exhale of enameled thread AWG 20. The circuit integrated lm3886 is a component easy of being found at the electronics stores, for that he is used in several projects of potency audio, some exist circuits with linked lm3886 in bridges for potencies of up to 150 watts. For most information on the assembly of that circuit, please read the datasheet of the LM3886. With the information of the leaf of data you can adapt the circuit with LM3886 your needs

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