电源电压

This can also be divided into two categories: one is to discuss the influence of power factor by way of dividing power circuit into capacitive and emotional under the circumstance of unchangeable voltage and frequency of output power, and the other is discussed the influence from voltage and frequency of power to power factor with the situation of constant component parameters.

具体又分为两种情况：一种是在电源的输出电压和频率都不变的条件下，把电路分为容性和感性，讨论了元件参数对功率因数的影响，另一种是讨论了在元件参数不变的条件下，电源的频率和电压对功率因数的影响。

The input common-mode voltage for current-sense amplifiers is allowed to exceed the power-supply voltage.

输入共模电流检测放大器电压可以超过电源，电源的电压。

The power supply can acquire real time online voltage signal of electric network and input into inverting system; generate synchronous signal and effective value of amplitude signal, then become SPWM pulse by wave generating chip SA4828. High degree sinus and good anti-disturbance performed power supply inverting can be also realized.

该电源可以在线实时采集电网电压送入逆变系统，实时产生同步信号和幅值有效值信号，通过波形产生芯片SA4828实时产生和采样电压同频同步且幅值可调的正弦脉宽调制脉冲，并采用开关线性复合功率变换技术，实现高正弦度和强抗负载扰动性能的电源逆变。

For reducing the LEMP lighting electromagnetic pulse radiation, the electrical source uses the Box-type power supply arrester, the power supply arrester and the modular power supply arrester as the third SPD surge protection device. The Low-voltage surge arrester or spark gap is laid between the compute net and equipotential grounding grids for avoiding signal interference and counterattack of ground voltage. The parameter and model of the signal lighting-protector of lines of communication are chosen according to the transfer rate, work level and characteristic impedance.

对控制房和DCS柜采用避雷针、独立针的直接雷防护；系统电源分别采用箱式电源避雷器、电源避雷器、模块式电源避雷器作为三级电源保护，减少LEMP雷电电磁脉冲辐射；计算机网络与等电位地网间设置低压避雷器或火花隙防止信号干扰和避免地电压反击；根据传输速率、工作电平、特性阻抗等，选择通信线路的信号防雷保护器的参数和型号。

Direct current with the positive pole earthed and the negative pole connected to the test electrode by means of a low capacitance unscreened lead.

b直流电源的正极接地，负极由一根低电容的非遮罩电线与试验电极连接。电源输出电压应为脉动因数不大於5%的直流电压。

B Direct current with the positive pole earthed and the negative pole connected to the test electrode by means of a low capacitance unscreened lead.

b直流电源的正极接地，负极由一根低电容的非屏蔽电线与试验电极连接。电源输出电压应为脉动因数不大于5%的直流电压。

Additionally the manostat 7805 give the battery charge up after keep the voltage.charger can real time collect the voltage and the current in the charge up,and count the electrification parameter and spare electrification time.

在电源回路中，把日常民用的220v电压经过变压器变压到12v左右，再经整流滤波电路变为14v，作为max846a的充电电源的电压，另经稳压器7805稳压后给电池充电。

At this point, you should check the oscillation manifold circuit, the voltage should be the normal 10 or so (Special reminder: because the test should be carried out in the electrized, and has high-voltage power supply, and therefore pay special attention to personal safety, do not try to touch any part of the power supply).

这时，应先检查振荡集成块的供电电路，其正常的电压应该在10V左右（特别提醒：由于测试电压应在通电情况下进行，而电源板上有高压电，因此要特别注意人身安全，不可尝试直接触摸电源的任何部分）。

For example, communication power supply, solar cell, UPS, invertors, gasoline dynamotor, and diesel oil dynamotor etc. There are deferent voltage DC power supplies, deferent frequency AC power supplies.

例如，通信电源，太阳能蓄电池，UPS电源，航空中频静变电源，汽油、柴油发电机组等，包括不同电压等级直流电源，工频、中频的交流电源。

The whole system, which is powered by a single 5V power, supplies steady core voltage (1.8V) and I/O voltage (3.3V) with high-efficiency synchronous step-down dc/dc converter TPS54314 and TPS54316, presents a power supply sequencing solution for dual supply voltage DSPs and includes a supervisor on the power supplies and reset circuit in order to make the system more stable and efficient.

整个供电系统采用单一的5V电源供电，用高效率的同步电压转换芯片TPS54314和TPS54316芯片分别产生TMS320C6711B DSPs的内核电压（1.8V）和周边I/O接口电压(3.3V)，同时巧妙地解决了两种供电的顺序问题，并增设了电源监控和复位电路，确保供电系统稳定、高效地工作。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。