一、引言 在通信用开关电源系统中,为了减少输入电流谐波,降低其对电网的污染,同时有利于后级DC-DC变换电路的稳定工作,交流输入侧多采用有源功率因数校正技术。 提高功率因数最简单的方法是无源补偿法,但由于
一、引言 在通信用开关电源系统中,为了减少输入电流谐波,降低其对电网的污染,同时有利于后级DC-DC变换电路的稳定工作,交流输入侧多采用有源功率因数校正技术。 提高功率因数最简单的方法是无源补偿法,但由于
一、应用要求 1、驱动 电路是一种专为LED 供电的特种电源 ,要具有简单的电路结构、较小的占用体积,以及较高的转换效率。 2、驱动电路的输出电参数(电流、电压)要与被驱动的LED的技术参数相匹配,满足LED的要求
TPS759XX系列是TI公司专门为DSP、ASIC和FPGA等多芯片系统供电而设计的LDO线性稳压器,图1是电路简化原理框图。TPS759XX共有5个引脚,VIN是输入电压,VOUT是输出电压,FB是电阻配置引脚,GND是数字地,EN是调压使能引
TPS759XX系列是TI公司专门为DSP、ASIC和FPGA等多芯片系统供电而设计的LDO线性稳压器,图1是电路简化原理框图。TPS759XX共有5个引脚,VIN是输入电压,VOUT是输出电压,FB是电阻配置引脚,GND是数字地,EN是调压使能引
常用光纤测试表有:光功率计、稳定光源、光万用表、光时域反射仪(OTDR)和光故障定位仪。 光功率计: 用于测量绝对光功率或通过一段光纤的光功率相对损耗。在光纤系统中,测量光功率是最基本的。非常像电子学中的万
传统上,矢量网络分析仪被用来测量组件的连续波形(CW)S参数性能。在这些操作环境下,分析仪常常作为窄带测量仪器工作。它向组件传输已知的CW频率并测量CW频率响应。如果我们想查看单个CW频率的响应,我们可以在频率看
Comprising a standard Force-Sense lab power supply, an additional power supply for the ICs, and a separate control voltage, this adjustable current source provides a 1-to-1 ratio of control voltage to
Injection molding an IC into a connector or consumable itemInjection molding is the method of choice to embed integrated circuits (ICs) in medical sensors and consumables. This application note discus
This application note presents an LED driver solution for MR16 and similar retrofit lamps. The circuit drives LEDs from a 12VAC input. The solution works with both magnetic and electronic transformers
This application note presents an LED driver solution for MR16 and similar retrofit lamps. The circuit drives LEDs from a 12VAC input. The solution works with both magnetic and electronic transformers
This application note presents an LED driver solution for MR16 and similar retrofit lamps. The circuit drives LEDs from a 12VAC input. The solution works with both magnetic and electronic transformers
This loop-powered, 4–20mA precision transmitter includes a precision PWM signal coupler with galvanic isolation from the PWM signal source. The external PWM-encoded signal is a rectangular waveform g
A simple bidirectional analog switch (MAX4525) facilitates in-circuit programming by providing dual service for two lines (SDA and SCL) on the programmable device: for normal operation they connect to
在医院或者其他医疗机构的动态工作环境中,对重要资产和人员的实时准确定位往往是诊疗服务的成败关键。这方面有很多的例子,比如不知道最近的清洁输液泵在哪里,或者需要一个最合适的医生时,却不知其处于医院哪个位