恒电压

When the system is at work, IF output power is achieved through adjusting inverter trigger angular frequency, which can always make the power out put be in the biggest state . Through the effect of the voltage and current closed-loop ,IF power achieve constant power output.

由于系统在工作时，中频电源的输出功率是通过调节逆变触发角频率来实现的，这样就可以始终使输出的功率处于给定的最大状态，并且通过电压和电流闭环作用，使中频电源达到恒功率输出。

Following this rationale, if we were to hold the base-emitter voltage of a transistor constant, then its emitter current should likewise be constant, given a constant temperature

根据这个基本原理，如果我们能保持晶体管发射结电压恒定，当温度恒定时，发射极电流也将保持恒定。

Variations in VDD will increase the hase noise, so it is important to have a stable, low noise supply voltage at the device.

在VDD的变化将增加恒生噪音，因此它必须有一个稳定，低噪音的设备电源电压。

The pulsed controller, with micro-controller unit as the core, light emitting diodes and keyboard as the man-machine communication interface, has been designed and developed in combination with electronic technology, automation theory and MCU technology.

本文利用电子技术、自动控制理论及单片机技术，设计并制造了直流电焊机双丝脉冲控制器，以单片机为内核，数码管、键盘为人机界面，可以使焊接电压成为在一定恒压基础上，进行一定频率和幅值变化的脉冲电压。

Circuit simulation and chip testing results show that when the LED driving current is 350 mA and the power supply is 6 V with ±10% variation, the stability of the output constant current of the accurate proportional current sampling mode LED driving IC will show 41% improvement over that of a traditional proportional current sampling mode LED driving IC.

经电路仿真及流片测试，表明当LED驱动电流为350mA，电源电压6V并正负波动10%时，改进的精密比例采样模式LED驱动电路比传统比例采样模式LED驱动电路的恒流特性稳定度提高了41%。

Constant power output characteristics can avoid prodigality caused by super-brightness when voltage of high-voltage sodium lamp exceeds 220V.

5， 恒功率输出特性避免高压钠灯在高于220V电压会产生超亮度浪费。

English: Superior Power products, in addition to within the whole framework of an international universal AC input , a variety of constant-current output, up to 95% efficiency 、 small size , with a short-circuit / over load / over voltage / over temperature protection and so on, also has a built-in active PFC function. This series of products are more efficient, longer life, and energy-saving more pronounced.

公司简介：：久嘉电源系列产品，除具有国际通用全范围内交流输入，多种恒流大电流输出，效率高达95%、体积小，带短路/过负载/过电压/过温度保护等特点外，还具有内置主动式 PFC 功能，该系列产品效率更高、寿命更长、节能更明显。

To get the problem solved, a protection circuit has been designed, which contains a micro-current amplifier, an absolute window voltage comparator, an ultra-range tips circuit, a UREF benchmark constant voltage source circuit, and an executive circuit.

针对这一问题，设计了一个保护电路，整个系统由微电流放大器、绝对值窗口电压比较器、超量程提示电路、UREF基准恒压源电路、执行电路构成。

A phase-shifted controlling PWM DC/DC full bridge converter with softswitching is proposed and used to realize a constant current power of20A(5～48V).This full bridge converter utilizes the transformer leakageinductance(or the resonant inductance in series with transformersprimary)and the autoecious capacitance of MOSFET to achieveZVS(Zero-Voltage-Switching),as a result it can decrease the switchingwaste,increase the switching frequency,and diminish the power bulk.

本文使用一种通过移相控制进行脉宽调制的软开关全桥变换器来实现20A(5～48V)恒流源，这种全桥变换器利用变压器的漏感、原边串联谐振电感和功率管的寄生电容来实现开关管的零电压开通，降低了开关损耗，提高了开关频率，减小了电源体积。

19Mm.扫频结束后测蓄电池最终状态,观察电池外观变化 5 Note: The definitions of some nomenclatures of this specification (1) standard charge: 0.3C5A charge at 20℃±5℃ to the limit voltage, then change to charge with constant voltage till the current less than or equal to

备注：以上标准中的一些术语的定义：(1)标准充电：在环境温度 20℃±5℃的条件下，以 0.3C5A 充电，当电池端电压达到充电限制电压时，改为恒压充电，直到充电电流小于或等于 0.02C5A 后停止充电(2)剩余容量：电池经过特定的检测程序后的首次放电容量。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。