WRN-533 WRN-540 WRN-541 WRN-542 WRN-543 K type thermocouples
WRN-533 WRN-540 WRN-541 WRN-542 WRN-543 K type thermocouples, the eddy current displacement sensor product information shows that the resistance value of the resistance element is generally related to temperature, material, length, and cross-sectional area. The physical quantity that measures the resistance is affected by temperature is the temperature coefficient, which is defined as each 1 ° C increase in temperature The percentage change in resistance value with time. The main physical characteristic of a resistor is to change electrical energy into thermal energy. It can also be said that it is an energy-consuming element, and current passes through it to generate internal energy. The resistor usually plays the role of voltage division and current distribution in the circuit. For signals, both AC and DC signals can pass through resistors.
Low-power resistors are usually made of carbon film packaged in a plastic shell, while high-power resistors are usually wire-wound resistors, which are made by winding a high-resistance metal wire around a ceramic core.
If the resistance of a resistor is close to zero ohms (for example, a large cross-section wire between two points), the resistor has no hindrance to the current. The circuit in parallel with such a resistor is short-circuited and the current is infinite. If a resistor has infinite or large resistance, the loop connected to the resistor in series can be regarded as an open circuit, and the current is zero.