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(guó)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...

Abstract: When using an external thermal diode to measure temperature, the accuracy of the temperature measurement depends on the characteristics of the external diode. Two critical...

How to Interpret DS1847/DS1848 Temperature Readings Abstract: The DS1847 and DS1848 have...

Abstract: The DS1852 is a digital potentiometer with five analog inputs that can be used in conjunction with the potentiometers to gather feedback information about an analog system, as well as provide analog control functions. Its intende...

Abstract: The applications for the Thermochron range from shipping monitoring of perishable goods or containers of temperature-sensitive chemicals to process verification. The authenticity of the temperature measurements are important sinc...

Abstract: A circuit is shown that allows a MAX6650 fan speed regulator IC to control a high-voltage fan on the other side of an isolation barrier. Chips are available to monitor and control ventilation fans. Less common a...

Abstract: The DS1854, DS1857, and DS1858 monitor VCC, ambient temperature, and external analog inputs. This application note explains how to interpret the values stored in the Main Device SRAM and translate them into temperature and voltag...

Abstract: This in-depth article covers the theory behind a Delta-Sigma analog-to-digital converter (ADC). It specifically focuses on the difficult to understand key digital concepts of over-sampling, noise shaping, and decimation filtering...

Abstract: A simple circuit that allows a 4mA–20mA to power an analog temperature sensor. This circuit uses an analog temperature sensor, op amp, transistor, and low-dropout linear regulator to provide a 4mA–20mA outpu...

Abstract: This article describes a thermoelectric cooler (TEC) temperature controller designed for maintaining the temperature of a laser diode (or other components) within 0.1°C This article describes a thermoelectric c...

Abstract: The MAX1253/54 and MAX1153/54 system monitors are a low cost solution for monitoring multiple temperatures in a system. This application note explains how to measure temperature using remote sensing diodes in single-ended or diff...

Abstract: The design and implementation of a temperature logging circuit for under-the-hood use is described. Measurement results from the completed circuit are presented. Download SoftwareThe rewarding pursuit of...

Abstract: A pair of temperature switches control a thermal disconnect circuit for system temperature protection. The circuit "crowbars" the power supply when excessive temperature is detected by the thermal switches. A te...

Abstract: The DS1847/DS1848 dual temperature-controlled nonvolatile (NV) variable resistors consist of two 256-position linear variable resistors and a direct-to-digital temperature sensor. The device is capable of setting and temperature-...

Abstract: Before it can accurately measure temperatures, the DS2422 needs to undergo a two-point trim. For the highest level of accuracy, this trim needs to take place as late as possible, i.e., with the end product that the DS2422 resides...