液晶電視
電子發(fā)燒友網(wǎng)本頻道提供了專業(yè)的液晶電視技術(shù)文章和液晶電視及數(shù)字電視知識及應(yīng)用資料等;是值得收藏和分享的液晶電視知識欄目。
使用MAX6958/MAX6959LED驅(qū)動器實(shí)現(xiàn)單個(gè)LED
摘要：該應(yīng)用筆記詳細(xì)說明了如何使用MAX6958和MAX6959 LED顯示驅(qū)動器實(shí)現(xiàn)象素級(單個(gè)LED)亮度控制。該技術(shù)增強(qiáng)了這些驅(qū)動器內(nèi)置的64級整體(一次調(diào)整所有LED)亮度控制功能。 ...
設(shè)計(jì)非隔離型反激LED驅(qū)動器
摘要：本應(yīng)用筆記提供了一個(gè)驅(qū)動高亮度LED的簡單電路，只需很少的外圍元件，并提供了線性和PWM亮度調(diào)節(jié)的功能。非常適合Osram、Lumiled、Cree和Nichia LED。 概述...
為高亮度LED提供高效電流驅(qū)動
摘要：本文討論的簡單電路能夠調(diào)節(jié)高亮度LED的驅(qū)動電流，該電路采用非定制、高度集成的降壓型開關(guān)調(diào)節(jié)器(MAX5035)，能夠準(zhǔn)確地控制流過LED的電流。MAX5035 DC/DC轉(zhuǎn)換器在7.5V至76V寬輸...
2009-04-27 標(biāo)簽：led 713
利用MAXQ2000和MAX6960構(gòu)建股價(jià)顯示系統(tǒng)
摘要：本應(yīng)用筆記介紹了一套基于MAX6960顯示驅(qū)動器和MAXQ2000微控制器(MAXQ20內(nèi)核)的股價(jià)顯示系統(tǒng)，并提供了構(gòu)建該系統(tǒng)的所有必備信息。其中包括電路原理圖、Windows軟件和微控制器...
2009-04-27 標(biāo)簽：MAXQ2000 1148
MAX6951/MAX6950LED顯示驅(qū)動器與MAXQ20
摘要：本應(yīng)用筆記說明MAX6951/MAX6950 LED驅(qū)動器和MAXQ2000的SPI外設(shè)通信的匯編程序設(shè)計(jì)。 引言MAX6950和MAX6951分別為5位和8位共陰極LED顯示驅(qū)動器，通過高速SPI 接口控...
2009-04-26 標(biāo)簽：led 712
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 標(biāo)簽：led 1055
低功耗的PWM輸出控制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 標(biāo)簽：led 1865
具備高溫保護(hù)功能的白光LED驅(qū)動器
摘要：電路驅(qū)動一只大功率白光LED (WLED)，當(dāng)溫度過高以及熱敏電阻發(fā)生開路或短路故障時(shí)，將關(guān)閉LED。 具備高溫保護(hù)功能的白光LED驅(qū)動器 摘要：電路驅(qū)動一只大功率...
2009-04-26 標(biāo)簽：led 637
用LED替代低效率的MR16鹵素?zé)?/a>
摘要：利用LED替代MR16鹵素?zé)裟軌蛴行Ы档湍芎?，?jié)省電路及系統(tǒng)維護(hù)的成本。本應(yīng)用筆記詳細(xì)說明了在當(dāng)前的MR16照明系統(tǒng)中采用LED的優(yōu)勢，文中給出的5W白光LED驅(qū)動電路結(jié)合散熱器...
2009-04-26 標(biāo)簽：led 1450
使用MAX15005用于LED應(yīng)用系統(tǒng)的供電和驅(qū)動
摘要：本參考設(shè)計(jì)是汽車LED應(yīng)用的完整系統(tǒng)設(shè)計(jì)。采用MAX15005電流模式控制器，將標(biāo)準(zhǔn)鉛酸汽車電池的電壓升至21V，用于驅(qū)動一串汽車LED。 下列提供了汽車LED系統(tǒng)的參...
2009-04-26 標(biāo)簽：led 669
利用MAXQ2000微控制器的LED驅(qū)動器MAX6970顯示
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 標(biāo)簽：led驅(qū)動器 790
設(shè)計(jì)一個(gè)基于LED視頻顯示板-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 標(biāo)簽：led 1038
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 標(biāo)簽：lcd 862
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 標(biāo)簽：lcd 2219
調(diào)節(jié)液晶偏壓發(fā)生器無需電感器-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 標(biāo)簽：電感器 824
使用DS1050可編程PWMs控制直流電動機(jī)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 標(biāo)簽：DS1050 1350
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...
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 標(biāo)簽：HD44780 1296
LCD TV 液晶電視背光設(shè)計(jì)分析
LCD TV 液晶電視背光設(shè)計(jì)分析 摘要：LCD (液晶顯示器)是電控發(fā)光管，LCD TV (液晶顯示電視)采用白光作為“背光”，通常使用冷陰極熒光燈(CCFL)為彩色...
2009-04-26 標(biāo)簽：lcd 2044
MAX6951/MAX6950 LED顯示驅(qū)動器與MAXQ2
摘要：本應(yīng)用筆記說明MAX6951/MAX6950 LED驅(qū)動器和MAXQ2000的SPI外設(shè)通信的匯編程序設(shè)計(jì)。 引言MAX6950和MAX6951分別為5位和8位共陰極LED顯示驅(qū)動器，通過高速SPI 接口控...
2009-04-26 標(biāo)簽：led 695
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 標(biāo)簽： 546
高功率LED驅(qū)動器接受寬輸入電壓范圍-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 標(biāo)簽：led 1723
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 標(biāo)簽：led 867
買液晶顯示器最要注意的問題
買液晶顯示器最要注意的問題 拒絕購買的液晶之一：17英寸寬屏LCD 只要說起LCD，恐怕很多人首先聯(lián)想到的是“寬屏”，的確，寬屏LCD雖然是個(gè)新...
2009-04-19 標(biāo)簽：顯示器 971
高速控制方案LED顯示屏電路圖及原理
圖1是高速控制方案LED顯示屏電路原理。采用MCS51系列單片機(jī)對LED顯示屏進(jìn)行控制；隨機(jī)存儲器62512用作LED顯示屏的數(shù)據(jù)存儲器，存儲待顯示內(nèi)容的字模數(shù)據(jù)；采用8行掃描方式，多片LE...
2009-03-29 標(biāo)簽：LED顯示屏 6332
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