2020 LM3886 2.0 amplifier board 68W + 68W diy kit Star point grounded

Description

LM3886 2.0 amplifier board 68W + 68W diy kit Star point grounded
Description
Description:
The sound quality is better than many large board designs, the midpoint is very stable, within 1MV. The official circuit is optimized, and it is more resistant to hearing than the DC servo. The star is grounded at one point, and the noise is zero. Very short power and signal wiring, no loss, and fast speed. The price is very high, and there is no impact when starting up. In fact, LM3886 is more original without the pre-amp.
The materials are in place. 50A Sanken rectifier bridge, VIS MKT coupling capacitor NOVER gold capacitor 6800UF 35 (power supply within 25V) or Japan 6800uF-50V capacitor (over 25V power supply),
Taiwan copper pin resistance, etc., PCB is double-sided immersion gold, mounting screws are provided
This board already includes rectification and filtering, and it can work by directly connecting the transformer.
◆ Load impedance: 4-8Ω recommended
◆ Output power: maximum 68W+68W
◆ Static noise: no bottom noise
◆ Power supply voltage: wide range from AC16X2 to AC30VX2
The TF behind the LM3886TF is a fully insulated package. Compared with the LM1875T, its power is larger. It can reach a maximum continuous undistorted average power of 68W under the rated working voltage. It also has a relatively complete overvoltage, overcurrent and overheat protection function, which is valuable The thing is that it has the function of automatically resisting the current impact when the machine is turned on and off, so that the speaker can work safely. The excellent performance of LM3886 has made it widely used in audio production in recent years. Many finished power amplifiers have direct application as a post-amplifier or use it as a subwoofer amplifier circuit. The new high-fidelity audio power amplifier integrated circuit LM3886TF introduced by the American NS company (National Semiconductor Corporation) is used for power amplification. Its characteristics are: high output power (continuous output power 68W), low distortion (total distortion plus noise <0.03%), protection functions (including overvoltage protection, overheat protection, current limit, temperature limit, speaker impact when switching power supply Complete protection and noise suppression functions, few peripheral components, easy production and debugging, stable and reliable work. Because it is easy and applicable to make power amplifier circuit, it is especially suitable for the production of hobbyists and electronic enthusiasts.
PCB size: 100X60MM
Package ：
1 x 2020
LM3886 2.0 amplifier board 68W + 68W diy kit Star point grounded
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