电源电阻

The parasitic coupling between instruments and the ground as well as the disturbance from the electromagnetic field bring the difficulty in balance of the bridge.

由于作为电桥供电电源的数字信号发生器和作为指零仪的数字锁相放大器两者的对地寄生耦合以及环境电磁场等影响，导致宽频精密双臂交流电阻电桥的平衡很难调节。

RG resistance is uranium metal plating on the top bar magnet, has excellent impact resistance characteristics and high voltage, high reliability, pulse load capability, low voltage coefficient of performance, widely used in communications equipment, high-quality power supplies and other areas .

RG 电阻是用金属铀镀于磁棒上面，有着极佳的耐冲击特性及耐高压，可靠性高、脉冲负载能力强、电压系数低等性能，广泛地使用于通讯设备、高质量电源等领域。

This topic uses the switching mode is the entire bridge all controls the rectification filter, moreover the power source has also utilized the soft switch technology, causes its loss to reduce obviously, the DC-DC transformation use cuts the wave boosted circuit to realize, the structure is simple, the transfer efficiency is high; Selects the small breakover resistance, the high shutter speed P60N06 tube for the switching valve, to select the quick recovery diode rectification, reduces the reverse breakover time, reduces the loss.

本课题采用的开关方式是全桥全控整流滤波，而且电源还运用了软开关技术，使它的损耗明显降低，DC-DC变换使用斩波升压电路来实现，结构简单，转换效率高；选用小导通电阻、高开关速度的P60N06管为开关管、选用快速恢复二极管整流，减少反向导通时间，降低损耗。

"Exception No.1: A unit having resistive circuity , high-impedance winding , and the like , not subject to excessive secondary-voltage build-up in case of electrical breakdown during the test may be tested :"

"例外1：具有电阻性电路，高阻抗绕组以及类似物在测试时由于电击穿可能产生过高次级电压的电源单元，可以按下列方法试验："

For the design of the power circuit frame, the in-series resistance plan is applied in commutate circuit to restrain the voltage pulse caused by rising arc; while the parallel connection switch is adopted in inverted circuit to guarantee the reliability of the power at work.

在主电路拓扑设计中，整流电路采用了串联降压电阻的方法来抑制起弧时的电压脉冲；逆变电路采用了双并联开关组方案，以进一步提高电源工作的可靠性。

Because resistance is not very precise in the testingmagnetorquer device,differential amplifier circuit is not very symmetrically.

在磁力矩器测试设备中，要求电源的电压是可变的，再加上电阻的实际阻值和标定的阻值之间存在误差，造成差分放大器的正负端的不对称。

1 A component - a fixed resistor , Positive Temperature Coeffecient or Negative Temperature Coefficient resistor , diode , or the like - employed to limit (see 2.7) the output of a unit to withiin the required current or power levels , or otherwise used to obtain acceptable performance, shall have permanence and stability so as not to decrease its limiting capacities .

10.1 一个元件——固定电阻，正温度系数或负温度系数电阻器，二极管，或类似元件——用来限定电源单元的输出在要求的电流或功率值水平，或用来得到可接受性能，应具有持久性和稳定性，不致于减小它的限定容量。

Every certain distance the heating thread is welded to the generatrix,which makes the continuous parallel connection resistance.

电源母线为二根平行绝缘铜线，在内绝缘层上缠绕电热丝，并将电热丝每隔一定距离与母线连接，形成连续并联电阻。

But if the Hall IC use a 12V supply, additional pull-down resistor and zenor diode would be needed to clamp the voltage in case of the Hall input voltage would exceed 5V.

但是，如果 Hall IC 使用 12V 的电源，为了使 Hall 输入的电压不超过 5V，必须再附加下拉电阻，齐纳二极管等来钳制输入电压。

The hardware included helicon wave antenna and focusing system.

其中硬件系统主要包括：螺旋波天线和辉光聚焦系统的设计；PCL-818HG数据采集卡输出的+5V稳定信号，经过分压电阻和三极管后，作为数控器的外部启动/停止信号，控制步进电机带动光谱仪转动；另外，为了减小光电倍增管的噪声，单独为其提供了稳定的高压直流电源。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。