Selection of Fuses in Small Home Appliance PCB Board

2023-12-08 XC News

The Fuses commonly used in PCB boards of small household appliances use self-recovery fuses to protect the circuit. The selection of self-recovery fuses in small household appliances can be divided into the following steps:

  

Firstly, determine the working voltage of the self-recovery fuse;

  

2. Based on the actual average operation of different products, determine whether the self-recovery fuse is the inactive current;

  

3. The maximum current ratio, temperature, and other parameters of household small appliances in actual work, as well as the time required for self-recovery fuse self-correction (self-recovery fuse action current amplification or reduction);

  

4. Revise it to an actual experiment and ensure that there is no false protection work, but it is necessary to self-recover the fuse parameters within the specified time and protect the motor from stalling. The change in the thermistor of a small motor is an easy choice, but after repeated experiments, the thermal resistance of the motor varies significantly

  

During the experiment, self-restore the resistance value of the fuse to determine the upper and lower limits.

Fig.1

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目录- Fuse Protection Upgrading Introduction    Fused Circuit Protection Selection Advice    Low Voltage Branch Circuit Fuses    Low Voltage Supplemental Fuses and Limiters    Electronic/PCB/Small Dimension Fuses    High Speed Fuses    IEC and British Standard Fuses    Photovoltaic Fuses/Fuses Holders/Fuses Blocks    Medium Voltage Fuses    Fuse Blocks and Holders    Power Distribution and Terminal Blocks    Connector Products    Disconnect Switches    Quik-Spec™ Electrical Gear    Surge Protective Devices    Telecom Protection Products    Fuse&Fuse Block Accessories    Fuse&Fuse Block Cross Reference and Index    Low-Peak™ Upgrade Program and Fuse Inventory Consolidation   

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