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Current Resistor: Basic Understanding of What Shunt Resistors Are
High Voltage Resistor Services 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 types of resistors can be used in numerous applications and they are retaining the complete understanding of resistors’ application and technology issues.

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. They do not achieve the accurate specification needed; however, these have been the closest available materials. There are also manufacturers that offer application-specific high voltage resistor products that come in low up to medium volume.

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 capability to manufacturer depends on some elements. These involve the TCR or temperature coefficient of resistor, wattage ranges, ohmic ranges, and voltage.
The Resistor Content Articles

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. The voltage limitation is set through the power dissipation issues like a 10k resistor with one kilovolt across it dissipating 100 watts.


Even in terms of a low current application, physical length of a device of about one centimeter indicating about 5 to 10 kV which arch around a resistor body is a big problem. Apart from it, some high voltage resistors were using spiral path of the dark ceramic metal oxide. This high voltage resistor is called 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. An important type of resistor is the non-inductive tubular resistor or the bulk ceramic one. 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 is accomplished to obtain rapid energy counterparts. At the same time, this will also suit rapid energy dumping works.
Precision Shunt Resistors

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.

Current shunt resistors were generally low in resistance and passive electronic devices used to measure AC (alternating current) and DC (direct current) going through the voltage drop in which currents created throughout resistance. Shunt resistor electrical specifications include power rating, temperature coefficient of the resistance, resistance tolerance, current rating, ohms, and power rating.


Ohm is measuring the opposition of the material to the electricity circuit flow while the TCR or temperature coefficient of resistance is referring to resistance change with temperature change. 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. A shunt resistor can be applied in current conversion. This is the aspect in which high precision has been required.
http://riedon.com/resistors/current-sense

The physical specifications for the shunt resistors involve resistor materials and lead type. These shunt resistors may get surface mounted and chassis mounted. They can also be bolted and through-hole mounted when desired or depending on the main application. 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. 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.

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. 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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