标称阻抗 meaning in English

nominal impedance

The exportation resistance of a device work device with what link after loading the resistance s the certain connections for should satisfying , in order to prevent mount to load the appearance produce the obvious influence . with each other connect to say to electronics equipments , for example after signal connect the enlarger , ex - class to connect class , only behind first - degree importation resistance before larger than first - degree exportation resistance 5 - 10 times are above , can think the resistance to match good ; connect the box come saying , electronics tube the machine should choose to use with for the enlarger its output to carry the mark to call the resistance the box for , but transistor enlarger then have noing this restrict , can take officing why resistance of equal or approximate box
一件器材的输出阻抗和所连接的负载阻抗之间所应满足的某种关系，以免接上负载后对器材本身的工作状态产生明显的影响。对电子设备互连来说，例如信号源连放大器，前级连后级，只要后一级的输入阻抗大于前一级的输出阻抗5 - 10倍以上，就可认为阻抗匹配良好对于放大器连接音箱来说，电子管机应选用与其输出端标称阻抗相等或接近的音箱，而晶体管放大器则无此限制，可以接任何阻抗的音箱。