Performance indicators of high voltage resistors

The electrical performance indicators of high voltage resistors usually include nominal resistance, error and rated power.

It forms some functional circuits with other components, such as RC circuits.

Resistance is a linear element. It is a linear element because it is found through experiments that under certain conditions, the current flowing through a resistor is proportional to the voltage across the resistor-that is, it conforms to Ohm's law: I=U/R.

Common carbon film resistors or metal film resistors can be simulated with linear resistors when the temperature is constant and the voltage and current values are limited within the rated conditions. If the voltage or current value exceeds the specified value, the high voltage resistor will overheat and not comply with Ohm's law, or even be burned. There are many types of resistors, usually divided into carbon film resistors, metal resistors, wire wound resistors, etc.: it also includes fixed resistors and variable resistors, photoresistors, varistors, thermistors and so on.

Generally speaking, using a multimeter can easily determine whether the resistance is good or not: adjust the multimeter to the appropriate gear of the electrical barrier, and place the two test leads of the multimeter on both ends of the resistance, and you can read the resistance from the multimeter. Resistance. It should be noted that your hands cannot touch the metal part of the test lead when testing the resistance. But in actual electrical maintenance, resistance damage rarely occurs. The important thing to pay attention to is whether the resistance is soldered or desoldered.