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☆─────────────────────────────────────☆ jan2zhao (我要自行车我要新自行车我要我的自行车) 于 (Wed Oct 1 19:34:00 2008) 提到: offset value 啥意思？ ☆─────────────────────────────────────☆ xt9876 ([X|Z]Tao~~zZ) 于 (Wed Oct 1 19:39:23 2008) 提到: 偏置直流偏置什么的【在 jan2zhao (我要自行车我要新自行车我要我的自行车) 的大作中提到: 】 ☆─────────────────────────────────────☆ police (我其实想换个名。。。。) 于 (Wed Oct 1 19:41:19 2008) 提到: 失调值。。我有确认了下。。【在 jan2zhao (我要自行车我要新自行车我要我的自行车) 的大作中提到: 】 ☆─────────────────────────────────────☆ police (我其实想换个名。。。。) 于 (Wed Oct 1 20:24:10 2008) 提到: 偏置好像是bias xxx 【在 xt9876 ([X|Z]Tao~~zZ) 的大作中提到: 】 : 偏置直流偏置什么的 ☆─────────────────────────────────────☆ xt9876 ([X|Z]Tao~~zZ) 于 (Wed Oct 1 20:29:52 2008) 提到: 我们是实验里 offset是偏置但很可能不正式【在 police (我其实想换个名。。。。) 的大作中提到: 】 : 偏置好像是bias xxx : 昂？你们有学这个？ ☆─────────────────────────────────────☆ police (我其实想换个名。。。。) 于 (Wed Oct 1 22:41:25 2008) 提到: from wiki Input offset voltage — the voltage required across the op-amp's input terminals to drive the output voltage to zero.[3] In the perfect amplifier, there would be no input offset voltage. However, it exists in actual op-amps because of imperfections in the differential amplifier that constitutes the input stage of the vast majority of these devices. Input offset voltage creates two problems: First, due to the amplifier's high voltage gain, it virtually assures that the amplifier output will go into saturation if it is operated without negative feedback, even when the input terminals are wired together. Second, in a closed loop, negative feedback configuration, the input offset voltage is amplified along with the signal and this may pose a problem if high precision DC amplification is required or if the input signal is very small.[4] 【在 xt9876 ([X|Z]Tao~~zZ) 的大作中提到: 】 : 我们是实验里 : offset是偏置 : 但很可能不正式 : ................... ☆─────────────────────────────────────☆ police (我其实想换个名。。。。) 于 (Wed Oct 1 22:43:29 2008) 提到: wiki again Biasing in electronics is the method of establishing predetermined voltages and/or currents at various points of a circuit to set an appropriate operating point. The operating point of a device, also known as bias point or quiescent point (or simply Q-point), is the DC voltage and/or current which, when applied to a device, causes it to operate in a certain desired fashion. The term is normally used in connection with devices such as transistors and diodes which are used in amplification or rectification.

offset value : bias voltage