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Almost every application for resistors in power supply design has different specification priorities and performance requirements. These include resistors that need to be able to handle high voltage, current and power, as well as ones that require low tolerances. Often specialized attributes are needed, like surge capability or negative TCR. Resistors are playing important roles in regulating the supply output and protecting the supply from faults. Besides linear regulators and switched-mode power supplies, resistors also has...
Date：2020-01-07 [More+]
In the ever-shifting world of electronics, one thing that hasnt changed over the years is the resistor color code. It is used to identify resistance value and tolerances for cylindrical resistors with axial leads. The International Electronics Commission formally defines the color code in its IEC 60062 standard. Microhm Electronics HPMRY series and PMRY series are popular cylindrical resistors. The resistor color code is expressed in bands of various colors imposed sequentially across the circumference of the resistor. There ...
Date：2020-01-06 [More+]
We talked in the past about the benefits of continuous monitors and also introduced the different types (single-wire vs. dual-wire) to you. The focus of todays post is the technology behind continuous monitors how they work, how they compare to each other and what role does the resistor play? So, lets jump right in. Introduction to Continuous Monitors While wrist straps are the first and best line of defence against ElectroStatic Discharge (ESD), they must be tested to ensure that they are installed and working properly. On-d...
Date：2019-12-23 [More+]
The U.S. Patent and Trademark Office, USPTO, has issued Ford a patent for a vehicle seat having moisture sensing, according to an article on the website Ford Authority. The abstract discusses a vehicle seat with a seat base, a cushion on the base, and one or more channels formed in the cushion, and a moisture sensor in the seat base to detect liquid in one or more channels. This is similar to use shunt resistor to sense current in the BMS of automotives. The sensed fluid would indicate a seat condition that could be used to c...
Date：2019-12-20 [More+]
Microhm Electronics developed the resistors to offer higher pulse performance when compared to generic off-the-shelf versions. The joule ratings listed for GTW series are not the highest energy rating we can produce for each version, but do give an indication of the overall capabilities available for different physical sizes and resistance value options. In general, Microhm Electronics prefer to work with our customers to meet the necessary energy dissipating requirements. We then use optimized materials and manufacturing tec...
Date：2019-12-19 [More+]
When designing power supplies and regulated battery circuits, the aim is to eliminate the risk of short circuits or over current conditions which are likely to damage other components. Microhm Electronics current sense resistors are the simple and economic solution for these applications. What is a current sense resistor? Current sensing products are established industry favorites among resistive products. A majority of current sense resistors are surface mount, as is true with most passive products. Current sense resistors ...
Date：2019-12-16 [More+]
Temperature coefficient of resistance (TCR) is the calculation of a relative change of resistance per degree of temperature change. It is measured in ppm/C (1 ppm = 0.0001%) and is defined as: TCR = (R2- R1)/ R1 (T2-T1). For high-precision resistors, this specification is typically expressed in parts per million (ppm) per degrees Celsius, with reference to normal room temperature, typically +25C. Despite the importance of this specification, individual resistor manufacturers use different methods for defining TCR on their pub...
Date：2019-12-06 [More+]
A resistor is having a fixed, defined electrical resistance which is not adjustable. Fixed resistors are the most commonly used resistors and in general one of the most used electronic components. Fixed resistors are available in axial leaded and surface mount packages as well as more customized packages depending on their application. While axial leaded resistors used to be the most used resistors, nowadays the advantages of surface mount devices make the SMD resistors the most popular. Microhm Electronics manufactures wide...
Date：2019-12-05 [More+]
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