本人在实际工作中也遇到了同样的需求，为此自己设计了一款可以从0V 起调的宽范围稳压电源电路，并制做完成。经多年来的实际使用，电源工作非常稳定，整体性能非常理想。好东西不能自己独厚，这里介绍给大家。
上传时间： 2013-11-22
上传用户：jennyzai
一款实用的12V电瓶升压的笔记本电脑电源
上传时间： 2013-10-20
上传用户：sjyy1001
ATX是计算机的工作电源，作用是把交流220V的电源转换为计算机内部使用的直流5V，12V，24V的电源。 ATX电源的特点:与AT电源相比，ATX电源增加了“＋3.3V、＋5VSB、PS－ON ”三个输出。其中“＋3.3V”输出主要是供CPU用，而“＋5VSB”、“PS－ON”输出则体现了ATX电源的特点。ATX电源最主要的特点就是，它不采用传统的市电开关来控制电源是否工作，而是采用“＋5VSB、PS－ON”的组合来实现电源的开启和关闭，只要控制“PS－ON”信号电平的变化，就能控制电源的开启和关闭。“PS－ON”小于1V伏时开启电源，大于4.5伏时关闭电源。
上传时间： 2013-11-14
上传用户：xuanjie
The LT®1943 is a highly integrated, 4-output regulatordesigned to power large TFT LCD panels. The LT1943employs switching regulators—instead of linear regulators—to minimize power dissipation and accommodate awide input voltage range. The wide input range, 4.5V to22V, allows it to accept a variety of power sources,including the commonly used 5V, 12V and 19V AC adaptors.
上传时间： 2013-10-19
上传用户：yuhaihua_tony
高的工作电压高达100V N双N沟道MOSFET同步驱动 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.
上传时间： 2013-10-24
上传用户：wd450412225
Many system designers need an easy way to producea negative 3.3V power supply. In systems that alreadyhave a transformer, one option is to swap out the existingtransformer with one that has an additional secondarywinding. The problem with this solution is that manysystems now use transformers that are standard, offthe-shelf components, and most designers want toavoid replacing a standard, qualifi ed transformer with acustom version. An easier alternative is to produce thelow negative voltage rail by stepping down an existingnegative rail. For example, if the system already employsan off-the-shelf transformer with two secondary windingsto produce ±12V, and a –3.3V rail is needed, a negativebuck converter can produce the –3.3V output from the–12V rail.
上传时间： 2013-10-09
上传用户：Jerry_Chow
The LTC®4151 is a high side power monitor that includesa 12-bit ADC for measuring current and voltage, as wellas the voltage on an auxiliary input. Data is read throughthe widely used I2C interface. An unusual feature in thisdevice is its 7V to 80V operating range, allowing it to coverapplications from 12V automotive to 48V telecom.
上传时间： 2013-10-29
上传用户：集美慧
功能简述：本控制器采用微控制器控制，其功能如下：1． 12V/24V 蓄电池自动识别2． 自动开关灯智能感知外界光线，天黑时延时自动开启路灯，天亮时自动关闭路灯3． 自动充放电（以12V 蓄电池为例）进入白天后太阳能电池板电压高于蓄电池电压时自动进入充电状态，充电至蓄电池电压高于14.4V 就进入涓流状态充电。而当天黑且蓄电池电压高于10.6V 就允许向LED 放电。4． 蓄电池保护（以12V 蓄电池为例）：当蓄电池电压低（低于10.6V）时，会自动关闭路灯，防止过放，以保护电池。当电池充满（14.4V）时，会停止其他充电状态，而进入涓流充充电状态，以防止过充。5． 采用PWM 调光技术对LED 路灯进行调光，可以和各种可调光恒流源匹配工作。6． 为了节能而调光，可以有各种节能调光模式，以实现不同程度的节能。
上传时间： 2013-11-07
上传用户：wyc199288
传统电源电路检修 二、开关电源电路检修 •首先应检查F601、F602两个保险丝。 •若F601或F602熔断，有可能是保险丝本身质量不好，但换上新保险丝后再次熔断，说明电路有电流过大故障. •若F601再次熔断，有可能是整流管V601、V602击穿。 •若F602再次熔断，有可能是稳压输出12V的负载过流，也可能是调整管V603、V605的c-e极击穿。 •若保险丝好，再检查18V直流电压。无18V电压，则有可能是电源变压器绕组开路、或电源开关S601接触不良，或V601、V602整流管都开路。 若18V正常，则无12V输出电压的原因可能是R601、R602开路，C604、C605击穿，或V603、V605开路
上传时间： 2013-11-18
上传用户：蠢蠢66
LTC3803-5是Linear公司的工作在–55℃ 到150℃的固定频率恒流模式的反激电源控制器,最适合用来驱动高输入电压的N-MOSFET.工作电压可低至5V,输出电压精度可达±1.5%,静态电流仅为240uA,主要用在42V和12V汽车电源,通信电源,以太网供电(POE),辅助电源等.本文介绍了LTC3803-5主要特性, 方框图和多种应用电路.
上传时间： 2014-04-30
上传用户：chongcongying
