circuit

挑战：通过PXI 控制板卡和LabVIEW软件，构建一套比较完整齐全的PCB板的功能测试(FCT)系统，利用该系统可实现对音频视频以及各种静态参数（电压、电流、频率）的综合性全自动测试，对于新开发生产的PCB板，工厂无需频繁更换测试硬件，只要添加制作一个测试夹具，重新连接线路，利用LabVIEW开发编写测试软件即可。 应用方案：使用NI公司的PXI控制硬件平台结合NI的图形化编...

Abstract: A simple circuit consisting of a comparator and an exclusive-OR gate is sufficient to double the frequency of a reference signal. The versatile phase-locked loop (PLL) allows mul...

This circuit maintains power to the load regardless of momentary shorts or opens in the supply voltage, and includes a low-current overvoltage-protection IC ( MAX6495 ) that protects the load...

挑战：通过PXI 控制板卡和LabVIEW软件，构建一套比较完整齐全的PCB板的功能测试(FCT)系统，利用该系统可实现对音频视频以及各种静态参数（电压、电流、频率）的综合性全自动测试，对于新开发生产的PCB板，工厂无需频繁更换测试硬件，只要添加制作一个测试夹具，重新连接线路，利用LabVIEW开发编写测试软件即可。 应用方案：使用NI公司的PXI控制硬件平台结合NI的图形化...

Abstract: Portable systems often require operation from batteries or from a wall adapter. The MAX8865 low-dropout (LDO) linear regulator is used to provide the switchover function while suppl...

Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan noise is becoming a larger issue as more elec...

Abstract: In its simplest form, the PC voltmeter consists of a 4-channel, 10-bit A/D converter (IC2) with a few passive components, connected to the PC printer port via a 25-pin male D-type c...

Abstract: A simple circuit consisting of a comparator and an exclusive-OR gate is sufficient to double the frequency of a reference signal. The versatile phase-locked loop (PLL) allows multi...

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...

Abstract: In its simplest form, the PC voltmeter consists of a 4-channel, 10-bit A/D converter (IC2) with a few passive components, connected to the PC printer port via a 25-pin male D-type c...

Abstract: In its simplest form, the PC voltmeter consists of a 4-channel, 10-bit A/D converter (IC2) with a few passive components, connected to the PC printer port via a 25-pin male D-type c...

Abstract: A current-sense amplifier, comparator, external CMOS switch, and an external transistor can be used to create a circuit breaker. The simplicity of low-side current monitoring can...

A universal problem in battery-operated devices is the threat of damage when an end user (never an engineer) inserts the battery backward. You can avoid damage by inserting a single diode or...

It is often necessary to prevent a power supply's voltage from being applied to a load until the voltage has reached a certain minimum value. The circuit of Figure 1, consisting of two compac...

加利福尼亚托兰斯— 2011年3月—先进机械、材料和工程服务的领先供应商Seika Machinery公司现推出HIOKI IN-CIRCUIT HiTESTER 1220测试仪，测试仪配置全新设计的测量电子以及可实现更高测试速度的备选平行测试功能。 IN-CIRCUIT HiTESTER 1220可迅速连接到PC网络，使数据管理简单安全。HIOKI测试仪系...