Welcome to Gaia! :: View User's Journal | Gaia Journals

Wirewound Power Resistors Tips The high voltage resistors can be found in various designs. Each of these resistors is used for different purposes and applications. Most of their manufacturers are specializing in the design of a customer or application specific high voltage resistor in a low to medium volume. These resistor types are available for various applications. Each of them retains the technology and application issues’ understanding.

These manufacturers know that users are trying to prevent risking and compromising the component and system failure. They do this through using standard products of resistors. These do not get the exact specification being asked but they are actually the closes materials available. There have been manufacturers that are offering products for high voltage resistor that are application-specific and are available in low to medium volumes.

A high voltage resistor major application is circuit protection sensitive elements present in a power supply. Other applications include motor control, medical devices, anti static systems, balancing and emitter resistors, military systems (RADAR, SONAR) and divider circuits. The manufacturing capability is defined through several factors or elements which include wattage range, temperature coefficient (TCR), voltage, ohmic ranges and more.
riedon.com/

High voltage resistors have special requirements. These requirements are asked in the aspect of high voltage applications. The common little one-fourth watt carbon film resistors that can be found in many electronics are rated from 250 up to 500 volts which is below the level of kilovolt required. Voltage limitation will be set through the problems in power dissipation. This involves the 10K resistors with only 1 kv through it dissipating 100W in which it is excessive to a common one-fourth watt.


When it comes to lower current applications, the device physical length has been about 1 cm which indicate from 5 to 10 kilovolt arching around the body of a resistor has been a great problem. Some high voltage resistors utilize the spiral path of dark metal oxide. This is actually available in ceramic. This is another type of high voltage resistor. This is known as tiger stripe resistor. Its capability of peak voltage is usually the body length function and they come in voltage that is ranging about 50 kiloVolt. One type of resistor is the non-inductive tubular resistor. This may also be the bulk ceramic resistor. Due to large resistive material volume, these types of resistors must have the ability to handle highly pulsed power compared to the metal film or wirewound counterparts. This is to make them perfect for high energy pulse and rapid energy dumping works.
http://riedon.com/resistors/view/precision-shunt-resistor-usr-unr-4-3425-4020

Shunt resistors are usually associated a parallel position along with an instrument or the component. This is done to divert an electrical current. These have been providing the alternative paths for current just in case there is failure and may be utilized to complete the reduction in the sensitivity of input from an input line going to the ground.

The current shunt resistor has been generally passive and low resistance electronic devices that have been utilized in measuring DC (direct current) and alternating current (AC) through a voltage drop that the currents had created all through the resistance. Shunt resistors’ electrical specifications include ohms current rating, and power rating. Other specifications involved are the power coefficient of the resistance, temperature coefficient of the resistance and the resistance tolerance.


Ohm is used to measure the material’s opposition into the flow of electricity circuit. On the other hand, the temperature coefficient of resistance (TCR) is the resistance change with change in temperature. On the other hand, the PCR or power coefficient of resistance refers to the temperature that had risen due to self-heating. The resistance in current-sensing shunts varies. It usually ranges from about 100 µO up to 500 mO. Shunt resistors have been utilized in the applications of current conversion in which high precision has been required.
www.riedon.com/resistors/current-sense/

The physical specifications present in shunt resistors are resistor materials and even the type of lead. The shunt resistors may be bolted, surface mounted, through-hole mounted, and chassis mounted. Through-hole technology (THT) and surface mount technology (SMT) have been the other typical and well-known mounting styles. The other kinds of lead are screw terminals, J-leads, and tab terminals. There are also gull-wing leads, radial leads, and axial leads available.

Shunt resistors without leads are also available and they can be wire wound, metal film, metal oxide, carbon film, ceramic, metal alloy, thin film, and thick film. The carbon shunt resistor has been comprised of high temperature, resistive, solid and ceramic materials that have been bonded by the metal contacts. Metal allow shunt resistors have 2 or more elements while a wirewound shunt resistor has thin wire winding in a ceramic rod.

Each shunt resistor becomes unique in the area of packing because of passive electronic components that were packed in tape reel assemblies. This includes carrier tape which had embossed cavities for individual component storage. Others have been packed in trays (or trails) and they had been made up of carbon-power and fiber materials as they molded in rectangular outlines containing uniformly spaced matrices of pockets. Some of them have been packed in a tray (trail) and were comprised of both fiber and carbon-power materials. At the same time, these are molded in a rectangular form that has numerous pockets which were uniformly spaced.