Working Principle of Overcurrent Protection Circuit When the circuit is in normal state, the current of PTC thermistor for over-current protection is less than the rated current, and the PTC thermistor for over-current protection is in norm....
Current Detection Using Current Sensor The working principle of the overcurrent detection sensor is shown in Figure 1. The converter secondary current obtained by the converter is converted to a voltage by I/V. After the voltage is DC, the....
Electronic protection circuit has the characteristics of high-speed current cut-off and easy recovery. It can be used as over-current protection device in any DC circuit. However, the protection circuit using the common fuse has a slower ove....
1. The first part is the resistance sampling, the load and R1 are connected in series, as we all know. The currents in series are equal. The voltage on R2 changes with the current of the load, the current is large, and the voltage across R2....
Causes of lightning surge 1) Lightning strikes (mainly indirect lightning): For example, lightning strikes an outdoor line, and a large amount of current flows into an external line or a grounding resistor, thereby generating an interference....
Positive temperature coefficient thermistor (PTC) element as a new overcurrent protection. In recent years, it has been widely used in the user interface circuit of the program-controlled switch to prevent high-voltage lightning strikes and....
This article describes the shape, function, and detailed parameters of various NTC (negative temperature coefficient) thermistors. I. Ordinary NTC Thermistor Ordinary NTC thermistors are suitable for temperature compensation of AC and DC ele....
Q: What is the main function of NTC resistance series connection in AC circuit? How does it work? Question: What is the main function of the varistor parallel connection in the AC side circuit? How does it work? If there are not the above t....
The linear temperature sensor is a linearized output negative temperature coefficient (ntc) thermal element. It is actually a linear temperature-voltage conversion component, that is to say, under the condition of operating current (100ua),....
The temperature sensors on the car are mostly negative temperature coefficient thermistors. Such as the engines intake air temperature sensor, coolant temperature sensor, oil temperature sensor, automatic transmission and oil temperature sen....