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。
使用MAX6958/MAX6959LED驱动器实现单个LED
摘要：该应用笔记详细说明了如何使用MAX6958和MAX6959 LED显示驱动器实现象素级(单个LED)亮度控制。该技术增强了这些驱动器内置的64级整体(一次调整所有LED)亮度控制功能。 ...
2009-04-27 913
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...
2009-04-27 654
为高亮度LED提供高效电流驱动
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)，能够准确地控制流过LED的电流。MAX5035 DC/DC转换器在7.5V至76V宽输...
2009-04-27 632
利用MAXQ2000和MAX6960构建股价显示系统
摘要：本应用笔记介绍了一套基于MAX6960显示驱动器和MAXQ2000微控制器(MAXQ20内核)的股价显示系统，并提供了构建该系统的所有必备信息。其中包括电路原理图、Windows软件和微控制器...
2009-04-27 896
MAX6951/MAX6950LED显示驱动器与MAXQ20
摘要：本应用笔记说明MAX6951/MAX6950 LED驱动器和MAXQ2000的SPI外设通信的汇编程序设计。 引言MAX6950和MAX6951分别为5位和8位共阴极LED显示驱动器，通过高速SPI 接口控...
2009-04-26 620
High-Power White-LED Driver Op
Abstract: A white-LED driver based on a DC-DC step-up converter operates on one or two alkaline cells, and starts with voltages as low as 0.8V. Replacing incandescent bulbs with high-power white LEDs yields higher reliabi...
2009-04-26 931
低功耗的PWM输出控制LED亮度-Low-Power PWM
Abstract: A common brightness-control circuit for LEDs uses an electrically controlled potentiometer (EPOT) to achieve digital control of the LED brightness. Replacing the EPOT with an RC network, however, reduces both the IC count and the...
2009-04-26 1650
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...
2009-04-26 522
用LED替代低效率的MR16卤素灯
摘要：利用LED替代MR16卤素灯能够有效降低能耗，节省电路及系统维护的成本。本应用笔记详细说明了在当前的MR16照明系统中采用LED的优势，文中给出的5W白光LED驱动电路结合散热器...
2009-04-26 1196
使用MAX15005用于LED应用系统的供电和驱动
摘要：本参考设计是汽车LED应用的完整系统设计。采用MAX15005电流模式控制器，将标准铅酸汽车电池的电压升至21V，用于驱动一串汽车LED。 下列提供了汽车LED系统的参...
2009-04-26 563
利用MAXQ2000微控制器的LED驱动器MAX6970显示
Abstract: This note shows an application circuit and provides all the firmware required to interface the MAXQ2000 microcontroller evaluation (EV) kit to the MAX6970, an 8-port, 36V constant-current LED driver. Included in this application ...
2009-04-26 616
设计一个基于LED视频显示板-Designing an LE
Abstract: Currently, all of the top LED video-display board manufacturers have similar but proprietary architectures using LED video bricks of different color pixel sizes. Maxim has taken its knowledge of these applications and incorporate...
2009-04-26 904
Buffering Scheme Drives Large
Abstract: This application notes shows how to buffer the triplex backplane drive outputs of a LCD driver such as MAX7231 family to increase the capacitive drive capability. This enables a large LCD to be driven without ghosting and other a...
2009-04-26 775
LCD Contrast Control Using Dal
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 ...
2009-04-26 1943
调节液晶偏压发生器无需电感器-Regulated LCD-B
A stringent height limitation on the PC boards for personal digital assistants (PDAs) and palmtop computers compels the use of expensive, low-profile inductors in switch-mode power supplies. As an alternative, however, certain switch-mode ...
2009-04-26 730
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...
2009-04-26 1154
PWM Sets Output of LCD/LED Dri
Abstract: The digital, pulse-width-modulation (PWM) output available from many microprocessors is based on an internal 8- or 16-bit counter and features a programmable duty cycle. It is suitable for adjusting the output of an LCD driver, a...
2009-04-26 805
CCFL特性
摘要：冷阴极荧光灯(CCFL)用作白光源为液晶显示器(LCD)提供背光。CCFL可提供许多很好的特性，但也要考虑它们独特特征，以便使其可用性最大化。这篇应用笔记描述了一些CCFL的独特...
2009-04-26 966
Serializing an HD44780 LCD Dis
Abstract: Besides reducing the number of required GPIO lines from eleven to two, this circuit also provides programmable contrast and backlight control. Most LCD character displays connect to the outside world through a c...
2009-04-26 1037
LCD TV 液晶电视背光设计分析
LCD TV 液晶电视背光设计分析 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...
2009-04-26 1845
MAX6951/MAX6950 LED显示驱动器与MAXQ2
摘要：本应用笔记说明MAX6951/MAX6950 LED驱动器和MAXQ2000的SPI外设通信的汇编程序设计。 引言MAX6950和MAX6951分别为5位和8位共阴极LED显示驱动器，通过高速SPI 接口控...
2009-04-26 589
Multiplexing Shutdown Allows T
Presenting numbers on a 7–segment LED display is simple with 7–segment LED drivers like IC1 of Figure 1, but 7–segment LED displays are not capable of displaying all the letters of the alphabet. Yet, a display of text is valuable in ...
2009-04-26 455
高功率LED驱动器接受宽输入电压范围-High-Power
Abstract: Circuit based on a buck/boost converter controller regulates current to a white LED, despite an allowed variation of input voltage from 2.7V to 16.5V. The advent of high-power LEDs capable of replacing incandesc...
2009-04-26 1451
MAX6960 Programming Guide for
Abstract: This application note details how multiple MAX696x 8 x 8 matrix LED drivers can be arranged and programmed to support larger LED displays or dot-matrix elements. This family of drivers supports up to 256 daisy-chained ICs to driv...
2009-04-26 751
买液晶显示器最要注意的问题
买液晶显示器最要注意的问题 拒绝购买的液晶之一：17英寸宽屏LCD 只要说起LCD，恐怕很多人首先联想到的是“宽屏”，的确，宽屏LCD虽然是个新...
2009-04-19 881
高速控制方案LED显示屏电路图及原理
图1是高速控制方案LED显示屏电路原理。采用MCS51系列单片机对LED显示屏进行控制；随机存储器62512用作LED显示屏的数据存储器，存储待显示内容的字模数据；采用8行扫描方式，多片LE...
2009-03-29 5064
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