搜索 - 科创

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板子从设计到调试完成花了一个星期的时间。。。[s:245]这次采用SG3525＋半桥的方式驱动高压包，通过调制脉宽，来实现电弧放音的效果～

原价几万一台的东西，输入220伏，里面很新，只有电源主机没有配件。海包有多牛逼就不多说了。没焊枪测试，卖出不退，看好下手了。自提优先，发货不包运，卖3800元。电话13570280138，微信同号，微...

最近在搞TL494，只用了一个14寸的黑白高压包，弧不长，声音不是很响，输入功率有四五十瓦，可见其效率相比传统的是很低的，声音的能量只占了很小的部分。我想将输入的音频信号先进行放大，会不会有明显的...

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