The advantages of this method of measuring the toggle switch are relatively straightforward and convenient. The disadvantage is that the current passing through the switch during measurement is small, and the oxide film on the contact surface cannot be destroyed, thus causing a large error (large). This method is therefore not recommended for loop resistance measurements in high voltage switches. Indirect measurement by pressure drop method (voltammetry): The voltage drop method is the DC current of the switch socket, and the millivoltmeter is used to measure the voltage drop (mV) between the input and output ends of the toggle switch socket, and then use Ohm's law. Calculate the main loop resistance of the switch socket. Measuring lines with transformers and 矽 rectifiers. At the same time, when the main loop resistance is measured by the voltage drop method, the current passing through the sample is large enough to damage the metal oxide film on the contact surface, which reduces the measurement error, and the measured value is relatively accurate, so the main loop measurement of the toggle switch socket is recommended. Use the pressure drop method.

The toggle switch has a minute contact spacing and a snap mechanism, and the contact structure that performs the switching operation with a predetermined stroke and a predetermined force is covered by the outer casing, and a switch of the drive rod is externally provided.

Impact resistance: Durable impact means that the micro switch is not damaged by various parts caused by the mechanical impact during transportation or installation, and meets the impact within the range of operating characteristics. The misoperation shock refers to the impact range of the contact that is closed by the impact when the micro switch is used, which does not separate within a prescribed time.