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What is a pulse proof resistor?
The pulse proof, high power thick film chip resistors series is the perfect choice for most fields of power measurement electronics where reliability, stability, high power rating and excellent pulse load performance are of major concern. Typical applications include battery management systems in automotive appliances.
How much power can a resistor take?
The more watts a resistor can handle, the larger and more expensive the resistor is. Most resistors are designed to handle 1/8 W or 1/4 W. You can also find resistors rated for 1/2 W or 1 W, but they’re rarely needed in the hobbiest types of electronic projects.
How do you calculate power rating resistance?
For example if the power is 100 watts and the voltage is 50 volts, the current is 100 / 50, or 2 amps. Calculate the resistance, in Ohms, by dividing the voltage by the current. Ohms law states that voltage = current x resistance, so by rearranging the formula resistance = voltage / current.
Why do pulse resistors have a high pulse rating?
Our pulse rating assumes the pulse is of short duration and all the energy is going into the resistance wire, and doesn’t take into account energy dissipated into the rest of the resistor. For longer pulses, heat is transferred to the surrounding materials, so the energy absorbed can be much higher than the value given.
What kind of resistors can handle a 10kV pulse?
Stackpole’s axial leaded resistors have options which can handle pulse voltages up to 10KV, pulse power up to 80KW, and pulse energy up to 500J. Stackpole’s surface mount resistors have products that can handle pulse voltages up to 40KV, pulse power up to 4400W, and pulse energy up to 50J.
What is a pulse load for a carbon film resistor?
/τw for carbon film resistors, according to DIN 44 052. Pulse loads in single pulses or pulse trains, with a permissible mean power as shown in Equation R1-6 or R1-7, always have to take into consideration the voltage strength. A possible pulse load of 100 P R for 10 ms does not give us permission to directly apply 1000 P R for 1 ms.
How are pulse handling resistors used in RPC?
Pulse Power Withstanding Chip Resistors – RPC RPC is designed specifically to withstand pulse current and pulse power events by limiting the laser trimming allowed for calibration. Current crowding occurs where the resistor is trimmed which creates a hot spot and limits the amount of pulse power the part can withstand.