Technical Information

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  Information and parameters of various PTC (Positive Temperature Coefficient) thermistors

  1. PTC thermistor for temperature compensation and current limiting The shape of the thermistor is shown in the figure, and the main characteristic parameters are shown in the table. 2.MZ2 type energy-saving lamp soft starter thermistor The....

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  Cause Analysis of LED Damage and Introduction of Protection Method of LED Circuit

  White LEDs are voltage sensitive devices. In actual work, the current is 20 mA, but the current is often increased due to various reasons in use. If no protective measures are taken, the LED will be damaged after the increased current exceed....

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  Summary of simple overcurrent protection circuit design

  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....

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  Overcurrent protection circuit design scheme with different current detection methods

  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....

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  Overcurrent protection design method for DC circuits

  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....

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  Overcurrent protection circuit with self-locking

  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....

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  The cause of lightning surge of switching power supply and several anti-surge components

  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....

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  Comparison of performance between ceramic PTC and organic PTC

  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....

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  NTC (negative temperature coefficient) thermistor

  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....

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  The role of NTC thermistor in the power circuit

  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....

  TAG: Thermistor temperature sensor PTC thermistor NTC temperature resistance water temperature sensor power thermistor 10K 3950 thermistor NTC sensor PTC sensor PTCR PTC Ceramic Heating 

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