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  • lfsThe LFS FTP archive has been moved to a new server which is reachable under the na packages.linu

    lfsThe LFS FTP archive has been moved to a new server which is reachable under the na packages.linuxfromscratch.org. The reason for the move is that this new server sits on lot more bandwidth to spare.

    标签: reachable packages archive lfsThe

    上传时间: 2014-10-13

    上传用户:开怀常笑

  • A very small LISP implementation with several packages and demo programs.

    A very small LISP implementation with several packages and demo programs.

    标签: implementation packages programs several

    上传时间: 2017-04-18

    上传用户:ggwz258

  • 目录 第1章 介绍 第2章 安装 FreeBSD 第3章 UNIX 基础 第4章 安装应用程序: packages 和 Ports 第5章 X Window 系统

    目录 第1章 介绍 第2章 安装 FreeBSD 第3章 UNIX 基础 第4章 安装应用程序: packages 和 Ports 第5章 X Window 系统

    标签: packages FreeBSD Window Ports

    上传时间: 2017-07-04

    上传用户:2467478207

  • l298电机芯片驱动原理 (DUAL FULL-BRIDGE DRIVER)

    The L298 is an integratedmonolithic circuit in a 15- lead Multiwatt and PowerSO20 packages. It is a

    标签: FULL-BRIDGE DRIVER l298 DUAL

    上传时间: 2013-08-03

    上传用户:wendy15

  • IC封装热计算研究

    Many thermal metrics exist for integrated circuit (IC) packages ranging from θja to Ψjt.Often, these thermal metrics are misapplied by customers who try to use them to estimate junction temperatures in their systems.

    标签: IC封装 计算

    上传时间: 2013-10-18

    上传用户:猫爱薛定谔

  • DN457宽输入电压范围同步降压稳压器

      The LTC®3610 is a high power monolithic synchronousstep-down DC/DC regulator that can deliver up to 12Aof continuous output current from a 4V to 24V (28Vmaximum) input supply. It is a member of a high currentmonolithic regulator family (see Table 1) that featuresintegrated low RDS(ON) N-channel top and bottomMOSFETs. This results in a high effi ciency and highpower density solution with few external components.This regulator family uses a constant on-time valleycurrent mode architecture that is capable of operatingat very low duty cycles at high frequency and with veryfast transient response. All are available in low profi le(0.9mm max) QFN packages.

    标签: 457 DN 同步降压

    上传时间: 2013-11-07

    上传用户:moerwang

  • 使用新电源模块改进表面贴装可制造性

    The latest generation of Texas Instruments (TI) boardmountedpower modules utilizes a pin interconnect technologythat improves surface-mount manufacturability.These modules are produced as a double-sided surfacemount(DSSMT) subassembly, yielding a case-less constructionwith subcomponents located on both sides of theprinted circuit board (PCB). Products produced in theDSSMT outline use the latest high-efficiency topologiesand magnetic-component packaging. This providescustomers with a high-efficiency, ready-to-use switchingpower module in a compact, space-saving package. Bothnonisolated point-of-load (POL) switching regulators andthe isolated dc/dc converter modules are being producedin the DSSMT outline.TI’s plug-in power product line offers power modules inboth through-hole and surface-mount packages. The surfacemountmodules produced in the DSSMT outline use asolid copper interconnect with an integral solder ball fortheir

    标签: 电源模块 可制造性 表面贴装

    上传时间: 2013-10-10

    上传用户:1184599859

  • LTC6994参考设计及PCB布线规则

    Demonstration circuit 1562A is an engineering toolto design and evaluate the LTC699X-X family ofTimerBlox circuits. The center section of the boardcontains a pre-configured TimerBlox function.DC1562A comes in twelve timing function variationsas outlined in Table 1.Surrounding the center board is a ”playground”prototyping area. The prototyping area has padsfor Dip-8, S8, MS8, or S6 packages with breadboarding connections to each pin and two convenientpower buses and ground bus surrounding theentire area. This area is for conditioning signals tocontrol the timer function and for adding loads controlled in time.

    标签: 6994 LTC PCB 参考设计

    上传时间: 2013-10-18

    上传用户:如果你也听说

  • P89LPC912英文资料

    The P89LPC912/913/914 are single-chip microcontrollers in low-cost 14-pin packages, based on a high performance processor architecture that executes instructions in two to four clocks, six times the rate of standard 80C51 devices. Many system level functions have been incorporated into the P89LPC912/913/914 in order to reduce component count, board space, and system cost.

    标签: P89 LPC 912 89

    上传时间: 2013-10-12

    上传用户:司令部正军级

  • 基于MSP430F247和TMP275的测温仪

    介绍了一种TI公司最新推出的MSP430F247单片机,利用它自带的I2C模块驱动I2C总线的温度传感器TMP275。TMP275是一款具有高精度、低功耗的新型温度传感器。由于TMP275具有可编程功能,纤小的封装以及极大的温度范围,因而广泛应用于组建超小型温度测量装置。 Abstract:  A new single chip microcomputer MSP430F247 which is released by TI is introduced.It can drive I2C interface digital temperature sensor TMP275 with I2C module.TMP275 is a new temperature sensor which has high accurate,low power. Because TMP275 has programmable function,small packages and wide temperature range,it is applied widely in very little temperature measurment equipment.

    标签: 430F F247 MSP 430

    上传时间: 2013-12-06

    上传用户:asdfasdfd