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16 天
宁波|新消费燃旺城市烟火气
“选取上等的小麦粉擀皮切条、炸制蓬松,再用手工熬制的糖浆裹满,喷香四溢的一方烤糖就算制作好了。”走进镇海区永旺村“手艺人部落”,30多名孩子正跟着柯如金师傅体验宁波传统糕点制作。
电子工程专辑
20 天
自举电阻和电容的选取
随着上管S1开关,Vs高压时自举二极管处于反偏,Vbs和电源Vcc被隔离开。 自举电容的选取 当下管S2导通,Vs电压低于电源电压(Vcc)时自举电容(Cboot)每次都被充电。自举电容仅当高端开关S1导通的时候放电。自举电容给高端电路提供电源(VBS)。首先要考虑的参数是 ...
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