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Specifications LM3886 is a mono audio power amplifier chip using an 11 foot TO 220 package the back of the TF suffix is fully insulated package meant And compared to LM1875T LM3886 is more powerful at the rated working voltage up to 68W continuous average power without distortion also has a relatively perfect over voltage over current overheating protection function in addition it has a current anti switch automatically when shock function the speaker may be possible to avoid current surge when the amplifier power is turned on causing injury LM3886 performance parameters VCC 28V OUTPUT 68W 4 38W 8VCC 35V OUTPUT 50W 8Peak power 135WSNR 92dbConversion rate 19V usIntermodulation distortion 0 04 Mute functionSPiKeTM protection The amplifier board has the following characteristics 1 Using double sided alignment careful layout signal input portion away from the output section 2 Part of the coupling capacitors for longer minimum pad 5mm the maximum suitable for the capacitor of 25mm 3 The input section added high pass circuit making the board more stable 4 The output part RL circuit inductance and resistance in parallel effective protection chip effectively preventing the induced electromotive force shutdown speaker damage to the chip 5 The board use a DC power supply voltage range 16 to 36 recommented 32V 6 PCB size 74 x 50 x 1 6mm Installation note 1 The amplifier board can not be directly connected to a transformer output co
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