只要输入信号落在检测器的频率范围内，则功率计就能给出准确的的功率。
If the input signal is anywhere in the frequency range of the detector, the meter will make a valid power measurement.
基于常用的L6561芯片，设计了宽输入输出范围的400瓦金属卤化物灯电子镇流器功率因数校正电路。
Base on chip L6561, a PFC preregulator for 400w metal halide lamp ballast is designed with wide input and output range.
利用有源钳位电路实现主变压器铁心对称复位，功率开关在宽输入电压和宽负载电流范围内零电压开关。
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
它测量范围广，能自动采集流量、压力、温度、功率、噪声等参数，测量参数直接输入微机获得精确的数据、图表、曲线。
Its wide range, the acquisition automatically flow, pressure, temperature, power, noise, and other parameters, measuring parameters entered into the computer to obtain accurate data, charts, curves.
③输入侧的功率因数在一定的范围内可以控制。
The input power factor can be arbitrarily controlled within a certain control range.
③输入侧的功率因数在一定的范围内可以控制。
The input power factor can be arbitrarily controlled within a certain control range.
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