液晶电视
电子发烧友网本频道提供了专业的液晶电视技术文章和液晶电视及数字电视知识及应用资料等;是值得收藏和分享的液晶电视知识栏目。
Charlieplexing - Reduced Pin-C
Abstract: This application note discusses "Charlieplexing" -- a pin-count reducing multiplex technique used by the MAX6950, MAX6951, MAX6954, MAX6955, MAX6958, and MAX6959 LED display drivers. This application note discus...
2009-05-04 507
Driving 4-1/2 Digit Counter Di
Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to 5-digit LED displays for counter display applications requiring the display range -39999 to 39999 without decimal points. ...
2009-05-04 714
使用MAX6954驱动7段LED显示器
摘要：本文旨在帮助工程师快速掌握MAX6954驱动7段单色LED驱动器的使用方法。 MAX6954是一个通用显示驱动器，能够通过一个串口控制多个分立、7段、14段或16段LED显示器...
2009-05-03 1035
使用MAX6954驱动14段LED显示器
摘要：本文旨在帮助工程师快速掌握MAX6954驱动14段单色LED显示器的使用方法。 MAX6954是一个通用显示驱动器，能够通过一个串口控制多个分立、7段、14段或16段LED显...
2009-05-03 914
快速掌握MAX6954驱动16段单色LED显示器的使用方法
本文旨在帮助工程师快速掌握MAX6954驱动16段单色LED显示器的使用方法。 MAX6954是一个通用显示驱动器，能够通过一个串口控制多个分立、7段、14段或16段LED显示器。本篇...
2009-05-03 1299
白光LED驱动器提供64级对数调光-White-LED Dr
Abstract: This circuit drives as many as four white LEDs in parallel from a 3.3V source, and adjusts the total LED current from 1mA to 106mA, in 64 steps of 1dB each. The circuit of Figure 1 is designed for portable-power...
2009-05-03 481
显示器提供背光的高亮度发光二极管和SEPIC电源模块-Dis
Abstract: In automotive applications, offering a wide dimming ratio for backlights is important because the display panel must be viewable in both direct sunlight and in complete darkness. The latest high-brightness (HB) LEDs offer a backl...
2009-05-02 971
参考设计采用MAX15026为辅助电源的液晶电视或机顶盒-R
Abstract: This application note shows a reference design using the MAX15026 low-cost, high-efficiency synchronous buck converter in an auxiliary power supply for LCD TVs or set-top boxes. This reference design generates a 5V, 5A power supp...
2009-05-02 947
优化缓冲放大器/ADC的连接
摘要：随着接收机数字化程度的提高，模拟信号至数字域的转换成为提高通信设备动态性能的关键。本文详细讨论了为通信设备选择适当的信号调理及转换器件时需要考虑的关键参...
2009-04-29 728
白光LED驱动器提供64级对数调光-White-LED Dr
Abstract: This circuit drives as many as four white LEDs in parallel from a 3.3V source, and adjusts the total LED current from 1mA to 106mA, in 64 steps of 1dB each. The circuit of Figure 1 is designed for portable-power...
2009-04-28 722
LCD对比度控制的半导体数字电位器-LCD Contrast
Abstract: Manufacturers of portable equipment, workstations, small handheld computers, cell phones, and video games use flat panel displays to display text and images. Electro-mechanical potentiometers have been the typical mechanism used ...
2009-04-28 1782
使用DS1050可编程PWMs控制直流电动机和LED背光液晶
Abstract: The DS1050 is a 5-bit pulse-width modulator (PWM) controlled by a 2-wire bus. This allows a single master device to control up to 8 slave (DS1050 and other 2-wire devices) on a single 2-wire bus. In this application note, an inte...
2009-04-28 916
总线的I/O扩展器控制LCD偏置电压
Abstract: A circuit consisting of an SMBus™ I/O expander, step-up converter, and digital potentiometer enables the SMBus to control the contrast of an LCD. Small, handheld, battery-powered devices often feature an L...
2009-04-28 1068
LCD电视背光照明中的设计挑战
摘要：LCD (液晶显示器)是电控发光管，LCD TV (液晶显示电视)采用白光作为“背光”，通常使用冷阴极荧光灯(CCFL)为彩色荧光屏照明。其它技术，如：发光二极管(LED), 也作为一种考虑...
2009-04-28 648
顺序启动CCFL显示器的突发亮度调节
摘要：为了降低对直流逆变器瞬间电流的需求，DS3984/DS3988冷阴极荧光灯控制器采用顺序启动突发亮度调节的方式，控制LCD显示器的每个通道。 图1给出了DS3984/DS3988冷阴...
2009-04-28 662
DS3984/DS3988多灯驱动方案
摘要：DS3984和DS3988是多通道冷阴极荧光灯(CCFL)控制器。DS3984支持多达四通道，DS3988支持八通道。这些控制器使用推挽式驱动架构，可将DC电源电压转换成为驱动CCFL所需的高压AC波形。...
2009-04-28 985
用DS39xx CCFL控制器实现模拟调光
摘要：DS3881、DS3882、DS3984、DS3988、DS3991、DS3992和DS3994是冷阴极荧光灯(CCFL)背光液晶显示器(LCD)控制器。为了取得满意的视觉效果或延长灯泡寿命，在大多数应用中需要进行亮度调节。...
2009-04-28 1093
增强DS39x系列CCFL控制器的栅极驱动能力
摘要：DS3984、DS3988、DS3991、DS3992以及DS3994是冷阴极荧光灯管(CCFL)的控制器，用于液晶显示LCD的背光。每个控制器通道可以驱动两个逻辑电平MOSFET以转换直流电压到CCFL驱动所需要的高...
2009-04-28 1017
低压差线性稳压改善白光LED的亮度匹配-LDO Linear
Abstract: A simple, traditional method of powering white light-emitting-diodes (LEDs) with fixed bias voltage and ballast resistors result in poor brightness matching between LEDs. This is due to wide LED forward voltage variation, sometim...
2009-04-27 461
Buck/Boost Charge-Pump Regulat
Abstract: The MAX1759 step-up/step-down charge-pump regulator is used to power white LEDs with constant current by clever use of a feedback network. The 1x/2x modes of the charge pump provides high efficiency, especially in two-cell NiMH a...
2009-04-27 1434
串联或并联白光LED的供电方案：电荷泵与升压型DC-DC转换
摘要：白光LED被普遍用作便携设备LCD的背光源，原因是他们复杂程度较低、花费较少且尺寸小于CCFL背光源。PDA、手机和数码相机等便携设备已逐步过渡到彩色LCD显示屏，因此，越来...
2009-04-27 1991
结构紧凑，无电感升压电路调节白光LED偏置电流-Compac
Abstract: This article shows how to use the MAX1759 buck/boost charge pump to power white LEDs for display backlighting in portable applications. The increasing use of color LCDs in hand-held equipment is creating a need ...
2009-04-27 1112
混合电路驱动器的类型和数量的LED-Circuit Driv
Portable systems often use LEDs of different colors-white for the display backlight, green for keypad illumination, red for power, etc., and in varying quantities of each. Typically the LEDs are driven by at least two power supplies, one f...
2009-04-27 708
单管控制第二LED阵列在开关模式LED背灯-Single F
White-LED backlights are gaining acceptance because they offer higher reliability and simpler drive circuitry than those based on CCFL and EL technology. As a result, the white-LED backlight is increasingly common in PDAs, cell-phones, dig...
2009-04-27 775
利用LDO改善白光LED的匹配度
摘要：白光发光二极管(LED)在各种照明设备中的应用正在稳步增长，如手持产品中的闪光灯、显示器背光等。与白炽灯相比，它们提供真正的白光、消耗更低的功耗。与荧光灯相比，...
2009-04-27 385
白色LED的恒流驱动
摘要：用白色LED为显示器或其他照明设备做背光源时，需要对其进行恒流驱动，主要原因是： 避免驱动电流超出最大额定值，影响其可靠性。 获得预期的亮度要求，并...
2009-04-27 612
白光LED驱动器提供64级对数调光-White-LED Dr
Abstract: This circuit drives as many as four white LEDs in parallel from a 3.3V source, and adjusts the total LED current from 1mA to 106mA, in 64 steps of 1dB each. The circuit of Figure 1 is designed for portable-power...
2009-04-27 728
设计非隔离型反激LED驱动器
摘要：本应用笔记提供了一个驱动高亮度LED的简单电路，只需很少的外围元件，并提供了线性和PWM亮度调节的功能。非常适合Osram、Lumiled、Cree和Nichia LED。 概述...
2009-04-27 464
高亮度LED恒流驱动电路设计
高亮度LED恒流驱动电路设计 摘要：本文讨论的简单电路能够调节高亮度LED的驱动电流，该电路采用非定制、高度集成的降压型开关调节器(MAX5035)，...
2009-04-27 3063
具备高温保护功能的白光LED驱动器
摘要：电路驱动一只大功率白光LED (WLED)，当温度过高以及热敏电阻发生开路或短路故障时，将关闭LED。 具备高温保护功能的白光LED驱动器 摘要：电路驱动一只大功率...
2009-04-27 605
编辑推荐厂商产品技术软件/工具OS/语言教程专题
| 电机控制 | DSP | 氮化镓 | 功率放大器 | ChatGPT | 自动驾驶 | TI | 瑞萨电子 |
| BLDC | PLC | 碳化硅 | 二极管 | OpenAI | 元宇宙 | 安森美 | ADI |
| 无刷电机 | FOC | IGBT | 逆变器 | 文心一言 | 5G | 英飞凌 | 罗姆 |
| 直流电机 | PID | MOSFET | 传感器 | 人工智能 | 物联网 | NXP | 赛灵思 |
| 步进电机 | SPWM | 充电桩 | IPM | 机器视觉 | 无人机 | 三菱电机 | ST |
| 伺服电机 | SVPWM | 光伏发电 | UPS | AR | 智能电网 | 国民技术 | Microchip |
| 开关电源 | 步进电机 | 无线充电 | LabVIEW | EMC | PLC | OLED | 单片机 |
| 5G | m2m | DSP | MCU | ASIC | CPU | ROM | DRAM |
| NB-IoT | LoRa | Zigbee | NFC | 蓝牙 | RFID | Wi-Fi | SIGFOX |
| Type-C | USB | 以太网 | 仿真器 | RISC | RAM | 寄存器 | GPU |
| 语音识别 | 万用表 | CPLD | 耦合 | 电路仿真 | 电容滤波 | 保护电路 | 看门狗 |
| CAN | CSI | DSI | DVI | Ethernet | HDMI | I2C | RS-485 |
| SDI | nas | DMA | HomeKit | 阈值电压 | UART | 机器学习 | TensorFlow |
| Arduino | BeagleBone | 树莓派 | STM32 | MSP430 | EFM32 | ARM mbed | EDA |
| 示波器 | LPC | imx8 | PSoC | Altium Designer | Allegro | Mentor | Pads |
| OrCAD | Cadence | AutoCAD | 华秋DFM | Keil | MATLAB | MPLAB | Quartus |
| C++ | Java | Python | JavaScript | node.js | RISC-V | verilog | Tensorflow |
| Android | iOS | linux | RTOS | FreeRTOS | LiteOS | RT-THread | uCOS |
| DuerOS | Brillo | Windows11 | HarmonyOS |
工商网监