音视频及家电
电子发烧友网本频道提供专业的视频技术文章和音响技术应用资料等;是值得收藏和分享的视频技术与音频技术栏目。
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...
2009-04-27 747
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...
2009-04-27 828
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，...
2009-04-27 460
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...
2009-04-27 683
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...
2009-04-27 790
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...
2009-04-27 487
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 3172
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...
2009-04-27 651
MAX6956编程指南
摘要：本指南给出了MAX6956 LED显示驱动器以及I/O扩展器编程的详细信息。同时还讨论了类似器件(MAX6957、MAX7300以及MAX7301)的一些编程技巧。 概述MAX6956 LED驱动器...
2009-04-27 800
建设点阵图形小组与MAX6952和MAX6953 5x7LE
Abstract: This application note discusses hardware design techniques to build monocolour and bicolour graphic message boards using the MAX6952 and MAX6953 SPI™ and I²C 5x7 matrix LED display drivers. This appli...
2009-04-27 1071
从PC中试验MAX6950和MAX6951 LED显示驱动器
Abstract: This application note describes a PC program, downloadable free, to assist design, evaluation, font design with MAX6950 and MAX6951 7-segment LED display drivers. The MAX6950 and MAX6951 are five-digit and eight...
2009-04-27 908
数据复用器添加光标移动到MAX7219或MAX7221的LE
Abstract: The MAX7219 or MAX7221 7-segment LED display driver can highlight any one digit of its 8 digit display by adding a data multiplexer. This circuit intensifies the brightness of the selected digit to provide a cursor function for d...
2009-04-27 1198
在静态MAX6956和MAX6957 LED驱动器中加入全球
Abstract: This application note discusses techniques to change the intensity of all the LED segments of a display at once (global intensity control) driven by the MAX6956 or MAX6957 static LED drivers. This control is additional to the seg...
2009-04-27 622
Experimenting with the MAX6956
Abstract: This application note describes a PC program, downloadable free, to assist evaluation of the MAX6956 and MAX6957 LED display drivers and GPIO (port expanders). The MAX6956 and MAX6957 are versatile 28-segment LE...
2009-04-27 780
选择数字和字母显示配置的MAX6954和MAX6955的SP
Abstract: This application note uses a web based Java program to allow an engineer to simulate the wide range of display configurations of the MAX6954 and MAX6955 serial interfaced LED display drivers. The tool enables the user to check wh...
2009-04-27 779
添加小组发光强度控制MAX6952和MAX6953 5x7矩
Abstract: This application note discusses techniques to change the intensity of all the LED digits of a display at once (panel intensity control) driven by the MAX6952 or MAX6953 5x7 LED matrix drivers. This control is additional to the di...
2009-04-27 719
加入全球发光强度控制的MAX6954和MAX6955LED驱
Abstract: This application note discusses techniques to change the intensity of all the LED digits of a display at once (global intensity control) driven by the MAX6954 or MAX6955 multiplexed LED drivers. This control is additional to the ...
2009-04-27 996
使用MAX6950和MAX6951LED显示驱动器的多重双数
Abstract: This application note discusses how to connect the MAX6950 (5 digit) and MAX6951 (8 digit) 7-segment LED display drivers to multiplex dual digit LED displays instead of regular single digit 7 segment displays. T...
2009-04-27 1072
Migrating from the MAX7219 and
Abstract: This application note discusses the similarities and differences, both hardware and software, between the older MAX7219 and MAX7221 LED display drivers and the newer MAX6950 and MAX6951 drivers. These drivers are five-digit or ei...
2009-04-27 675
软件控制的MAX6952和MAX6953LED驱动器的图形应
Abstract: This application note discusses software design techniques to build monocolour and bicolour graphic message boards using the MAX6952 and MAX6953 SPI and I2C 5 x 7 matrix LED display drivers. This application not...
2009-04-27 687
使用MAX7219/7221向更高电压或电流-Using t
Abstract: Techniques to amplify the current and voltage drive capabilities of the MAX7219 and MAX7221 serial interface LED drivers. The MAX7219/7221 is an 8-digit, 7-segment common-cathode multiplexed LED display driver w...
2009-04-27 1589
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...
2009-04-27 680
接线的MAX6958/59向4位时钟显示-Wiring th
Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to LED displays for clock applications. Standard 1, 2, 3, and 4 digit displays, off-the-shelf clock displays are discussed. A su...
2009-04-27 874
驾驶4-1/2数字仪表显示与MAX6958/59LED驱动器
Abstract: This application note provides details on how to connect the MAX6958 and MAX6959 LED display drivers to 5-digit LED displays for panel meter applications requiring the display range -19999 to 19999 with decimal points. ...
2009-04-27 913
驾驶4-1/2数字计数器显示的MAX6958/59LED驱动
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. ...
2009-04-27 898
使用MAX6955LED显示驱动器与PIC单片机滚动信息-U
Abstract: A circuit and program listing for using the MAX6955 LED display driver with a PIC microcontroller and 14-segment displays. The MAX6955 is an LED display driver with an I2C™-compatible, serial interface cap...
2009-04-27 1268
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