Low Ohm Current Sense Resistors - Similar companies

We Produce all type of Current Sensing resistors . Simply put, a resistor is an electronic component connected into an electr ... ical 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. Asthe current flowsthrough the resistor, heat is produced which makesthe temperature of the resistor to rise above the ambient temperature. Now whether a particular resistor can be used in a specific electrical circuit is its ability to dissipate the heat generated without physical deterioration and within the temperature limits of that particular circuit. Resistors are rated to dissipate a given wattage without exceeding the declared “hot spot” temperature. This is largely determined by the size and materials used in the construction of the resistor and this is called “Free Air Watt Rating” or “Full Rating” or “Maximum Power Rating”. In some cases the conditions actually encountered deviate from the standard conditions and affect the temperature rise which determines whether that particular resistor can be used or not in a particular application. n other words you divide the voltage from the resistor by 0.05. Then you use the power formula P=IV or power = current x voltage. (See the formula above) WARNING - your precision power resistor can get very hot if you are running a lot of voltage and current through it. Before choosing a precision resistor you must calculate how much power it will be dissipating. Then choose a resistor and heat sink that has the proper wattage rating. The Caddock part above has a large heat sink attachment area so you can bolt it to a piece of metal to dissipate the heat generated from it. read more