1.现金超高价收购工厂库存、呆料、库存配件、IC芯片、内存芯片、贴片二三极管、贴片（直插）电容电阻等。
2.各类IC，二三极管，BGA各种电容电阻，发光管，接收头，咪头，晶振。无锡收购手机内存上门收购
3.手机IC，CPU电源，字库，功放，中频，排线等。
4.电脑内存条，硬盘，CPU，主板，显卡、VGA内存芯片：K4、K9、HY开头字母等。 无锡收购手机内存上门收购
5.各种液晶屏及摄像配件的电子料。收购电子元件收购IC求购电子元件,收购电子元件收购电子元器件,收购库存电子元件,回收电子元件
,回收库存电子元件,回收电子元器件,电子回收,电子收购,回收集成电路,收购集成电路,收购库存呆滞料，回收电子料件，回收单片机，
回收硬盘；无锡收购手机内存上门收购
长期收购库存积压各种电子元件，家电、通讯、电脑、设备、数码等方面的所有电子元件,配件,半成品,成品等等，收购IC，晶体，二极管，三极管，单片机，钽电容，电解电容，片容片阻，FLASH，电感，继电器，电位器等等，收购内存条、网卡、显卡
、硬盘、手机咪头、喇叭、液晶屏。 中介付佣，以诚相待，欢迎有库存电子的单位和个人来电洽谈。
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对于一个具有电阻、电感、电容的交流电路中，交流电源两端的电压一般不和它输出的电流同相位。如果调节电路的参数或者电源频率使它们同相位，这时电路就发生了谐振现象。按照发生谐振现象的电路不同，可以分为串联谐振和并联谐振。串联谐振在R、L、C串联电路中，但满足感抗XL等于容抗XC时，即电源的输出电压和输出电流同相位，就会发生谐振现象。因为发生串联电路中，所以也称为串联谐振。为了更加深入了解串联谐振的现象，在matlab/simulink中搭建交流串联R、L、C电路。