百度试题 结果1 题目The common-base current gain is defined as the ratio of ___ current to ___ current. A. base;emitter B. emitter;collector C. collector;base D. collector;emitter 相关知识点: 试题来源: 解析 D 反馈 收藏
aCurrent Transfer Ratio (CTR) is the ratio of the phototransistor collector current compared to the infrared emitting diode (IRED) forward current expressed as a percentage (%). 电流传输比 (CTR) 是光电晶体管集电极电流的比率今后与红外线发射的 (二极管) IRED潮流比较被表示为百分比 (%)。[translate...
摘要 The open ratio of a current collector has a great impact on direct methanol fuel cell(DMFC)performance.Althoug...展开更多 作者 Yingli Zhu Jiachi Xie Mingwei Zhu Jun Zhang Miaomiao Li 机构地区 Tianjin Key Laboratory of Integrated Design and On-line Monitoring for Light Industry&Food ...
A liquid electrolyte (LE) layer was inserted in between the two half MEAs to recuce the methanol crossover. It was noticed that the LE-DMFC gave the best performance with all the three current collector having different opne ratios. Similarly, the effect of two anaode catalyst layers was ...
A new direct extraction method, using a set of Z-parameter based ratios, is developed for SiGe HBTs. The input non-quasi-static effect is included to enable more accurate noise modeling. Excellent fitting with experimental data is obtained up to 60 GHz over a wide range of biasing currents....
CONSTITUTION:When the current amplification ratios of the transistors 6 and 11 deteriorate, base current increases by the reduced quantity of the collector current of the transistor 11, and the voltage of an output terminal 17 rises by the quantity. Then, the base current of the transistor 6 ...
However, when the load resistance is minimized, the transistor may not become completely ON and the output signal may be unstable unless the input current IFand output current ICare determined to be making sufficient allowance for factors such as the CTR specification range, the temperature character...
These, according to Pereira (1985), are able to accept a large proportion of diffuse radiation incident on their apertures and concentrate it without the need to track the sun. Finally, the required frequency of collector adjustment is related to the collector concentration ratio. Thus, for C ...
The product of the collector current is equalized by equalizing the sum of voltages VBE between a base and an emitter in such a manner and the multiplication or division of the current values is realized by turning the collector current of the respective transistors to the input current or the...
current applied to the collector of the first first-pair transistor the output current may be many times greater than the input current depending upon the relative base-emitter junction areas of the six transistors, and the high current ratio is relatively independent of the transistor current ...