錫焊的原理  錫焊是將熔化的焊錫附著于很潔凈的工作物金屬的表面，此時(shí)焊錫成份中的錫和工作物變成金屬化合...

JDM PIC 編程器的制作 前段時(shí)間rd09朋友提供了FENG3對(duì)JDM PIC 編程器改進(jìn)版的制作方法，我照做了一個(gè)，覺得這是一款性價(jià)比非常高的燒寫器，為讓大家在制...

利用電度表的竊電伎倆與防竊電措施     居民分戶安裝電度表，，實(shí)踐證明是節(jié)電的有效措施。但有極少數(shù)私心很重的人，在分...

居民住宅供電系統(tǒng)的保護(hù)性接地    本站曾發(fā)表過有關(guān)居民住宅供電保護(hù)性接地，如《什么是TT、IN、IT系統(tǒng)？》等稿件。但隨著強(qiáng)制性標(biāo)準(zhǔn)《住宅設(shè)...

不停電作業(yè)，安全措施要保證    變電所低壓帶電作業(yè)，一要求開工作票，完成保證安全的組織措施；二要求穿戴好防護(hù)用品，使用絕彖工具，站在絕彖...

Abstract: Many temperature sensing applications require galvanic isolation of the sensor. Fortunately, several low-cost temperature-sensing integrated circuits (ICs) are easy to isolate. This application note shows two approaches to isolat...

Abstract: All 1-Wire? device data sheets describe two sets of commands. The first set referred to as ROM Function Commands are used for device identification and selection. The second set is often called Memory Function Commands but ma...

Abstract: A mathematical method is presented in this application note that allows the user to improve the accuracy of bandgap-based digital temperature sensors. This method increases the accuracy by compensating for the offset and curvatur...

Abstract: Using a temperature switch and fan driver IC along with a remote diode temperature switch provides thermal protection and simple fan drive functions for a system. This 2-chip circuit provides fan control, over-t...

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 electronic equipment enters the off...

Abstract: A unique circuit for inverting the output signal of a temperature sensor such as the MAX6607 and MAX6608 without using precision components or references. The inverted signal is referenced to an analog-to-digital converter (ADC) ...

Abstract: Digital temperature sensors are available with a variety of serial interfaces of varying complexity. This application note shows how to use one family of thermal monitor ICs with a very simple 2-wire (clock in, data out) digital ...

Abstract: An IP-based networked sensor monitor can easily be created through the combination of the Tiny Internet Interfaces (TINI?) platform, 1-Wire? sensors, and the appropriate Java? software. The TINI platform provides th...

導(dǎo)致事故的心理因素  安全生產(chǎn)直接關(guān)系到人民的生命和國家的利益。對(duì)企業(yè)而言，它是實(shí)現(xiàn)企業(yè)經(jīng)濟(jì)效益的基礎(chǔ)，是企業(yè)穩(wěn)定發(fā)展的...

Abstract: Temperature-based fan control is a necessity in a growing number of systems, both to reduce system noise and to improve fan reliability. When fan control is augmented by fan speed monitoring, a speed control loop can be implement...

單相電能表防竊電的方法 單相電能表接線端子處有一連片，該連片對(duì)單相電能表準(zhǔn)確計(jì)量具有相當(dāng)重要的作用。據(jù)統(tǒng)計(jì)。利用該連片進(jìn)行...

單位安全用電指南　　1、電工必需持證上崗，各專業(yè)電工須經(jīng)專業(yè)技術(shù)培訓(xùn)，具備必要的電氣知識(shí)，熟悉《電業(yè)安全工作規(guī)程》，經(jīng)考試合格，持有國家勞動(dòng)部...

1觸電事故的分類 觸電是泛指人體觸及帶電體。觸電時(shí)電流會(huì)對(duì)人體造成各種不同程度的傷害。觸電事故分為兩類：一類叫“...

Abstract: The DS1620 digital thermometer and thermostat provides three thermostat outputs (THIGH, TLOW and TCOM) that can be used to control a fan or heater. There are two user-programmable thresholds (TH and TL) that control the three out...

Abstract: This application note describes how the DS18B20-PAR, DS18S20-PAR and DS1822-PAR temperature sensor integrated circuits (ICs) can greatly simplify the mechanical aspects of implementing parasite power in remote or probe type appli...