Power Resistor Manufacturers Information These high voltage resistors are available in various designs and they are used for more specific purposes. Most manufacturers are focused on delivering designs of application and customer specific resistors. They usually come in low and medium volume. Such kinds of resistors may be integrated in different applications and they retain full understanding of technology and application issues.
Manufacturers should completely understand that users avoid compromising and risking the failure of the component or system through stand resistor product usage. These are not obtaining the main specification required. However, they were known to be the closest materials. There are also manufacturers that offer application-specific high voltage resistor products that come in low up to medium volume.
The high voltage resistor’s main application is the sensitive elements of circuit protection in the power supplies, however, some applications involve military systems (SONAR, RADAR), motor control, emitter and balancing resistors, divider circuits, medical devices, and anti-static systems. The capability to manufacturer depends on some elements. These involve the TCR or temperature coefficient of resistor, wattage ranges, ohmic ranges, and voltage.
The high voltage resistors provide special requirements which are available on high voltage applications. The common ¼ W carbon film resistor present in most electronics have been rated from 250V up to 500 V. This is actually below the kilovolt level requirement. 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.
In terms of the lower current applications, the physical length of the device of about five to ten kilovolt. This is arching around the body of the resistor leading to a significant problem. Aside from that, other high voltage resistors have been using the spiral paths of a darker metal oxide which is present 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 extremely resistive volume of the materials, these resistors have been well pulsed power. When compared to metal film or wire wound counterparts, they will be higher. It has been done for ensuring that they will be suitable for rapid energy dumping as well as higher energy pulse works.
Shunt resistors are usually associated a parallel position along with an instrument or the component. This is done to divert an electrical current. These types of resistors provide alternative current paths in case there have been problems or failure and these are used for complete reduction of input sensitivity from the input lines through 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 resistor electrical specifications include power rating, temperature coefficient of the resistance, resistance tolerance, current rating, ohms, and power rating.
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. For the current-sensing shunts, the resistance usually ranges from 100 µO up to 500 mO. Shunt resistors have been utilized in the applications of current conversion in which high precision has been required.
Shunt resistors’ physical specifications come in different forms. But these include the lead type as well as the resistor materials. A shunt resistor can be surface mounted, chassis mounted, through-hole mounted, and bolted. THT or the through-hole technology and SMT or the surface mount technology are both other popular and common mounting styles. Some of the types of lead include J-leads, screw terminals, tab terminals, gull-wing leads, axial leads, and radial leads.
The shunt resistors that have no leads have been also available and the choices are thick film, wire wound, thin film, metal alloy, metal film, ceramic, carbon film, and metal oxide. Carbon shunt resistors were composed of resistive, ceramic, solid and high temperature materials that were bonded by metal contacts. The metal alloy shunt resistor contains more than 2 metallic elements and the wire wound shunt resistor has been composed of thin wire winding into the ceramic rod.
Shunt resistors differ in terms of packing methods because some passive electronic elements are packed in the reel tape assemblies along with a carrier tape which embossed cavities for storing individual component. Some were packed in trails (trays) have been composed of fiber and carbon-power materials while they have been molded in a rectangular outline containing matrices of pockets that are uniformly spaced.
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