Description: 伯克利大学有关开关电源的经典论文，很适合于初学者入门，以及有一定经验的设计人员进阶可作参考-Berkeley University of switching power supply of classic papers, it is suitable for beginners entry, as well as have some experience of the designers can make reference to Advanced Platform: |
Size: 1507328 |
Author:刘荣 |
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Description: 摘要:电压监测仪的校验工作量大、 效率和精度低， 为保证电压监测仪性能指标， 研制了一种对单相电压监测统计仪进行精度、 灵敏度、 谐波、 时间试验的校验装置。装置以高速单片机为核心， 利用丰富的P C机资源、 融合F P G A 技术、 点阵图形液晶等技术， 实现监测仪误差校验过程的自动控制、微机数据管理、 程控操作、 故障保护。实验结果表明装置综合误差为0 . 1 级， 输出电压失真度小于0 . 5 ， 系
统运行准确、 数据传输可靠、 操作方便及功能完善。-Abstract: The voltage monitor calibration heavy workload, efficiency and accuracy of low-voltage monitoring device in order to ensure performance indicators, developed a single-phase voltage monitoring of statistical instrument accuracy, sensitivity, harmonic, time calibration test device . Devices to high-speed single-chip microcomputer as the core, the use of PC-rich resources, integration of FPGA technology, dot-matrix graphic LCD and other technologies, monitor implementation of error checking process, automatic control, computer data management, program-controlled operation, fault protection. The results show that the device General error 0.1, the output voltage distortion of less than 0.5 , system operation is accurate, reliable data transmission, easy to operate and function. Platform: |
Size: 455680 |
Author:linfeng |
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Description: 一篇关于逆变器的论文 优化高电压IGBT造就高效率太阳能逆变器 -A paper on the optimization of inverter high voltage IGBT inverter to create high-efficiency solar Platform: |
Size: 271360 |
Author:ky |
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Description: Green-Mode PWM Controller with High-Voltage
Start-Up Circuit
The LD7575 is a current-mode PWM controller with
excellent power-saving operation. It features a highvoltage
current source to directly supply the startup current
from bulk capacitor and further to provide a lossless startup
circuit. The integrated functions such as the leading-edge
blanking of the current sensing, internal slope compensation,
and the small package provide the users a high efficiency,
minimum external component counts, and low cost solution
for AC/DC power applications. Platform: |
Size: 241664 |
Author:way |
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Description: A7105 是一低成本2.4GHz ISM 频段的无线应用射频芯片。A7105 内建高灵敏度的接收器(250Kbps@ -99dbm)以及高效率的功率放大器, 非常适合30 米以内的应用。A7105 内建接收信号强度指示RSSI, 温度传感器sensor, 以侦测环境对RF IC 的影响, 同时也内建1路 ADC 侦测使用电压。 内建无线唤醒机制, 从而延长电池使用寿命。-The A7105 is a low-cost 2.4GHz ISM band wireless applications, RF chip. A7105 built-in high sensitivity receiver (250Kbps @-99dbm) and high efficiency power amplifier is ideal for the application of less than 30 meters. A7105 built-in received signal strength indication RSSI, temperature sensor, sensor, RF IC to detect the environment, but also built-in 1 channel ADC to detect the use of voltage. Built-in wireless wake-up mechanism, thereby extending battery life. Platform: |
Size: 496640 |
Author:罗宇宙 |
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Description: X射线机控制源代码主要对高频微焦点牙科X线机的高频逆变技术、高频变压以及灯丝电路控制原理进行了编写研究。通过程序代码对于管电压以及管电流的控制，采用脉冲宽度调节方式（PWM）实现输出电压和功率的调节。X射线机控制程序通过硬件电路的AD采样经直流逆变、高频变压器、倍压整流形成数字电路经计算机编译得到单片机能够识别的二进制代码来控制机器，其成像极为清晰并且球管发射出的软射线得到了很好的抑制，降低了漏射线量，提高了成像效率，使常规X射线机的结构形状多样化，具有体积小、重量轻、低辐射（其辐射量、漏射线量仅为国家规定的百分之一），便于放置等特点。X射线机控制程序主要适用口腔门诊治疗前的检查，治疗过程中的效果对比，及治疗后的效果确定，对种植牙、根管治疗或微创手术患者带来极大的方便，是口腔门诊中不可或缺的软硬件设备。-X-ray machine control source code control principle of high-frequency inverter technology for high-frequency micro-focus dental X-ray machine, high frequency transformer, and filament circuit of the preparation of the study. By the program code for the tube voltage and tube current control, pulse width modulation (PWM) and to achieve the adjustment of the output voltage and power. AD sampling of the X-ray machine control program through the hardware circuit DC inverter, high frequency transformers, voltage doubler rectifier digital circuit is formed by the computer compiles the microcontroller can identify binary code to control the machine, its very clear imaging and bulb emits soft rays inhibition, reducing the amount of radiation leakage and improved imaging efficiency, diversification of structure and shape of the conventional X-ray machine, a small size, light weight, low-emissivity (radiation, radiation leakage was only one percent of the state regulations), easy to place charact Platform: |
Size: 59392 |
Author:sam |
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Description: KF8F4122 为哈佛结构的精简指令CPU。在这种结构中，程序和数据总线是相互独立的。
指令字节长度为 16 位，大多数指令能在一个机器周期内执行完成。一共有 73 条指令，效率
高，容易进行指令扩展。
芯片内集成了多种外设，包括：
1 个 8 位定时器/计数器 T0
1 个 16 位定时器/计数器 T1
2 个 16 位定时器 T2/T3
1 个 12 位 14 通道 ADC 模块
2 路 8 位 PWM 模块
1 个 CCP(捕捉/比较/PWM5)模块
2 个模拟比较器模块
1 个运算放大器模块
1 个 UART（兼容 LIN）模块
1 个 SSCI(I2C/SPI)模块
一个 2V/3V/4V 可选的参考电压
硬件看门狗（带软件使能）
低电压检测及低电压复位模块等
芯片内集成了 (1024+16)×8 位的用户数据存储器 RAM、16K字节的程序存储器和 128×8
位的 DATA EEPROM。
KF8F4122。(KF8F4122 is a lean instruction CPU for Harvard architecture. In this architecture, the program and data buses are independent of each other.
The length of the instruction byte is 16 bits, and most instructions can be executed within a machine cycle. A total of 73 instructions, efficiency
High, easy to extend instructions.
A variety of peripherals are included in the chip, including:
1 8 bit timers / counters T0
1 16 bit timers / counters T1
2 16 bit timers, T2/T3
1 12 bit, 14 channel ADC modules
2 way 8 bit PWM module
1 CCP (capture / compare /PWM5) modules
2 analog comparator modules
1 operational amplifier modules
1 UART (compatible LIN) modules
1 SSCI (I2C/SPI) modules
An optional voltage reference for the 2V/3V/4V
Hardware watchdog (with software enable)
Low voltage detection and low voltage reset module etc.
The chip is integrated with (1024+16) x 8 bit user data memory, RAM, 16K bytes of program memory, and 128 * 8
Bit DATA EEPROM.
KF8F4122) Platform: |
Size: 4159488 |
Author:明月清风
|
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Description: The need for variable speed of an ac induction motor arises in certain industrial applications and
this is often difficult to achieve because induction motors are of fixed speed. The available control techniques
such as variation of supply voltage, variation of number of poles, are characterized by low efficiency and high
maintenance cost. The improvement in power electronics technology through advancements in semi-conductor
electronic devices with increased reliability and reduced cost led to the development of modern solid-state
variable frequency motor drive which is an electronic device capable of controlling the speed of an induction
motor by varying the frequency with increased efficiency, reliability and low maintenance cost Platform: |
Size: 689152 |
Author:hmod |
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Description: LMS3635-Q1 和LMS3655-Q1 同步降压稳压器针对高
性能应用进行了优化，可提供3.3V、5V 或可调输出
（1V 至15V）输出电压。PWM 和PFM 模式之间的
无缝转换以及低静态电流可确保在所有负载下实现高效
率和出色的瞬态响应。(LMS3635-Q1 and LMS3655-Q1 Synchronous Step-Down stabilizer for high
Performance applications are optimized to provide 3.3V, 5V, or tunable output
(1V to 15V) output voltage. Between the PWM and the PFM patterns
Seamless conversion and low static current ensure high efficiency under all loads
Rate and excellent transient response.) Platform: |
Size: 2750464 |
Author:liuleideyu |
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Description: In this paper, a common grounded Z-source dc-dc converter with high voltage gain is proposed for photovoltaic (PV) applications, which require a relatively high output-input voltage conversion ratio. Compared with the traditional Z-source dc-dc converter, the proposed converter, which employs a conventional Z-source network, can obtain higher voltage gain and provide the common ground for the input and output without any additional components, which results in low cost and small size. Moreover, the proposed converter features low voltage stresses of the switch and diodes. Therefore, the efficiency and reliability of the proposed converter can be improved. Platform: |
Size: 120138 |
Author:Sridharan |
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Search - high-efficiency low-voltage