Anti-thunder overvoltage protection component
An overvoltage protection and component technology, applied in the direction of emergency protection circuit devices, emergency protection circuit devices, electrical components, etc. for limiting overcurrent/overvoltage, which can solve the limitation of rated working current, increased probability of damage, circuit operation Overvoltage and fault power frequency overvoltage protection capability is reduced to achieve the effect of preventing deflagration accidents
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[0031] Example 1
[0032] Such as Figure 1~2 As shown, the lightning and overvoltage protection component of this embodiment includes a zinc oxide varistor sheet 11, a positive temperature coefficient ceramic thermistor sheet 12, and a gas discharge tube 13. The positive temperature coefficient ceramic thermistor sheet 12 is made In a ring structure, the inner hole size of the positive temperature coefficient ceramic thermistor sheet 12 matches the outer diameter of the gas discharge tube 13, and the gap between the two is 0.1 to 1 mm; the thickness of the positive temperature coefficient ceramic thermistor sheet 12 is The height of the gas discharge tube 13 is the same, the outer diameter of the zinc oxide varistor sheet 11 and the PTC ceramic thermistor sheet 12 are the same; the lower electrode surface of the PTC ceramic thermistor sheet 12 and the zinc oxide varistor sheet 11 The upper electrode surface of the gas discharge tube 13 is welded by soldering, the gas discharge t...
Example Embodiment
[0040] Example 2
[0041] Such as Figure 5~6 As shown, the lightning protection and overvoltage protection component of this embodiment includes a zinc oxide varistor sheet 21, a positive temperature coefficient ceramic thermistor sheet 22 and a gas discharge tube 23, a zinc oxide varistor sheet 21, a positive temperature coefficient thermal resistor The varistor sheets 22 are all square, and the dimensions of the varistor sheet, thermistor sheet and the gas discharge tube need to be properly matched: the gas discharge tube specifications used are the same as in Example 1, and the varistor sheet size is long* Width*height=15*15*3mm, the external dimension of the thermistor sheet used is length*width*height=15*9*5mm. The lower electrode surface of the positive temperature coefficient thermistor sheet 22 and the upper electrode surface of the zinc oxide varistor sheet 21 are soldered; the gas discharge tube 23 is located on one side of the zinc oxide varistor sheet 21, and the lo...
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