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Windows Mobile Calculates power drain for wlan, BT, backlight etc and shows the results. Good to know, what setting
Calculates power drain for wlan, BT, backlight etc and shows the results. Good to know, what setting consumes most of the battery power on your windows mobile / Pocket PC.
电源技术 AOS mosfet Continuous drain current and bonding wire
bonding wire与current的关系
电源技术 透过MOSFET电压电流最佳化控制传导性及辐射性EMI
經由改變外部閘極電阻(gate resistors)或增加一個跨在汲極(drain)和源極(source)的小電容來調整MOSFET的di/dt和dv/dt，去觀察它們如何對EMI產生影響。然後我們可了解到如何在效率和EMI之間取得平衡。我們拿一個有著單組輸出+12V/4.1A及初級側MOSFET AOTF11C60 (αMOSII/11A/600V/TO220F) 的50W電源轉接器(adapter)來做 ...
电源技术 电子设备电源节能讲解
Abstract: The "vampire" drain on electricity by household gadgets is only one indicator of the lack of policies to conserve energy and protect people and businesses from a major energy disaster. Most
电源技术 DN378 低静态电流单片式降压型稳压器
 
Automobile electronic systems place high demands ontoday’s DC/DC converters. They must be able to preciselyregulate an output voltage in the face of wide temperatureand input voltage ranges—including load dump transientsin excess of 60V and cold crank voltage drops to 4V. Thec ...
电源技术 电源芯片viper22a的工作原理
VIPER22A的内部结构可知,它与其它开关电源存在一些不同。开机后,300V的直流电压从DRAIN(漏极)脚进入集成电路,经整流和稳压后供给开关电源IC工作,从而使这个电路工作时不需要外接启动电阻。即使Vdd供电电路不正常,电源电路的振荡电路仍能起振,而且电路有输出电压。用这种专用电源IC的DVD机电源有故障时,故障现象和其他开 ...
单片机编程 PCA9544A 4channel I2C multiple
The PCA9544A provides 4 interrupt inputs, one for each channeland one open drain interrupt output. When an interrupt is generated byany device, it will be detected by the PCA9544A and the interruptoutput will be driven LOW. The channel need not be active fordetection of the interrupt. A bit is also ...
单片机编程 8-bit I2C-bus and SMBus IO port with reset
The PCA9557 is a silicon CMOS circuit which provides parallel input/output expansion for
SMBus and I2C-bus applications. The PCA9557 consists of an 8-bit input port register,
8-bit output port register, and an I2C-bus/SMBus interface. It has low current consumption
and a high-impedance open-dra ...
无线通信 MAX7060的ASK_FSK的ISM射频发射机
Abstract: This application note illustrates the flexibility of the MAX7060 ASK/FSK transmitter. While the currently available evaluationkit (EV kit) has been optimized for the device's use in a specific frequency band (i.e., 288MHz to 390MHz), this document addresseshow the EV kit circuitry ca ...
软件工程 The LM158 series consists of two independent, high gain, internally frequency compensated operatio
The LM158 series consists of two independent, high gain,
internally frequency compensated operational amplifiers
which were designed specifically to operate from a single
power supply over a wide range of voltages. Operation from
split power supplies is also possible and the low power
supply cu ...