Application / Design Notes on Selection of Wirewound Resistor
Basics Simply put, a resistor is an electronic component connected into an electrical circuit to insert a specific resistance. Resistance is measured in ohms and as per ohms law, the current through the resistor will be directly proportional to the voltage across it and inversely proportional to the resistance. As the current flows through the resistor, […]
Use of Current Sense Resistors for Battery Management in Automotive Applications
In automotive applications the requirement of electronic circuits for battery charge monitoring for the detection of the remaining battery level and over current protection has now seen a steep spike in demand with the recent proliferation of Hybrid and Electric vehicles.Typically these low ohm resistors are used in this applications for current sensing by connecting […]
Low Ohmic / Current Sense Resistors for Automotive Applications
The demand for these types of resistors has increased in the automotive sector with the proliferation of Hybrid and Electric cars and in the sector in general due to the enhanced level of computerization and sophistication of various control systems.To meet this enhanced demand, HTR has introduced a wide variety of Electron Beam welded current sense […]
Comparative advantage of Wire Wound Technology over Film Technology in Fusible Resistor applications
Fuse Resistors serve a dual purpose, as a resistor and also a fuse. They are designed so that they will open with a large surge of current without any flame or other untoward incident.Fusible film resistors are generally used for lower power requirements and applications where the overload and surge handling requirements are not too […]
Comparative Performance between Thick Film and Electron Beam Welded Metal Band Resistor Technologies when used in Automotive Applications
These current sense resistors are predominantly used in automotive application in the DC/DC convertor output block and in battery management. The basic circuitry followed is that these low ohms resistors are connected in series with the load, and the potential difference between both terminals are measured by an IC to determine the quantum of current flow. The […]
Types Of Fusible Wire Wound Resistors and Ordering Information Required
A fusible resistor is a tailormade dual purpose component – There are basically two types of fusible resistors: (a) Tailor Made Resistors In order to correctly design a Tailor made fusible resistor to suit the customers specific application, the following data is required In certain cases the customer must be made aware that the compromise inherent […]
Why Are Capacitor Discharge Resistors Now Mandated As Essential Safety Device
In Electronics, Capacitor discharge resistors or Bleeder resistors are resistors connected in parallel with the output of a high voltage power supply circuit with the express purpose of discharging the residual electric charge stored in the filter capacitors of the power supply. As an example, a switch mode power supply uses a bridge rectifier to convert AC […]
Techno/Economic Comparison Between Silicon/Cement Coated Wire Wound Resistors And Ceramic Encased Resistors
Traditionally Wire Wound Resistors meant coated resistors of either silicon or vitreous enameled on a Ceramic body which was wound with resistance wire which was welded or soldered to the terminals and these types of resistors were termed as professional or industrial grade Wire Wound Resistors.However in the mid 1970’s there was a demand for commercial grade wire wound […]
Comparison Between Metal Plate & Ceramic Type Hvac Motor Control Resistors
Simply put, these are tailor made resistors having 3 distinct resistance values which translates into controlling the Blower Motor speeds of an Automotive Air-conditioner. These resistors are mounted in the Air Flow of the Air-conditioner module and the reason behind this is, to keep the resistor as cool as possible. In the case of a […]
