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Power amplifier board LM3886 power amplifier board with speaker protection

Rs. 2,899.00

Availability: In Stock

SKU : LM3886-green

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      LM3886 is a mono high-power audio amplifier chip launched by the American NS company. It...

      LM3886 is a mono high-power audio amplifier chip launched by the American NS company. It is packaged in an 11-pin TO-220 package. The suffix "TF" at the back means a fully insulated package. Compared with LM1875T, it has more power, with a maximum continuous undistorted average power of 68W under rated operating voltage, and also has a relatively complete overvoltage, overcurrent and overheat protection function, and it has automatic resistance to current when switching on and off. The impact function enables the speaker to avoid the possibility of damage caused by current impact when the power amplifier power is turned on.

LM3886 performance parameters at a glance:

  ·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
 

 Let me talk about the advantages of this board:

     1. Easy to install, the LM3886 chip is designed on the same side, there is no obstruction in front, it is very convenient to fix the chip.

     2. A 100P capacitor is added to the input terminal, which saves trouble in many board diagrams. The standard circuit must be added.

     3. Strictly abide by the principle of one-point grounding and separate wiring layout for high-current ground and low-current ground, which makes the board's low noise almost inaudible.

     4 , increasing the power level before expansion interfaces, can share a set of front and rear power level ( must be before stage supporting the use of common power and shop ).

     5. The power supply of the relay adopts the power supply of a voltage stabilizing block, and the heat sink is added, which is stable and reliable. General power amplifier boards use current-limiting resistors to supply power to the relays, which are easily affected by the input voltage. The input voltage is high, the relay heats up, the input voltage is low, the relay is not closed tightly, and the contact resistance is large.

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