If only considering the ESD characteristics of capacitors, it is necessary to ensure that the voltage across the capacitor does not exceed its breakdown voltage. However, in some specific circuit designs, composed of capacitors and resistors
As shown in the figure below, an NTC thermistor (Rv) is connected in series with a precision measuring resistor (Rm) to form a basic voltage divider circuit. The reference voltage VCC in this circuit
Depending on the cross-sectional area of the current passing through, there are also situations where 0.1mA and 10mA are used to measure the varistor voltage. At present, chip varistors all use 1mA DC current input
Varistors are widely used in power circuits, communication equipment, household appliances, and industrial control systems, mainly for lightning protection and overvoltage protection.
Varistors are made using ceramic technology, and their internal microstructure contains zinc oxide grains and grain boundaries. Due to the very neat arrangement of crystal molecules inside the grains, the electrical resistivity
Voltage Dependent Resistors (VDRs), also known as Varistors, are a special type of resistor