Selection principle of zinc oxide varistor

If the voltage level of the power electronic equipment is low, but the surge energy is relatively large, we can choose the pressure sensitive

The voltage V1mA is lower, the varistor of the varistor has a larger diameter varistor, and conversely, if the power supply electronic equipment has a withstand voltage level Vo

Higher, we need to choose a varistor with a higher varistor voltage V1mA, because it can protect our power supply.

Sub-electrical equipment, but also can extend the life of the varistor and the working time and safety.

Varistor resistors are used to protect their overvoltage protection circuits in various electronic devices. The varistor has

There are many types and specifications, there are many main parameters for varistor, the main parameters are: nominal voltage, voltage, maximum

Continuous operating voltage, maximum limiting voltage, residual voltage ratio, current capacity, leakage current, voltage temperature coefficient, current temperature coefficient, voltage non-

Linearity factor, insulation resistance, static capacitance, etc. These choices must meet the requirements of our protected circuits, especially at nominal power

Press on, the nominal voltage should be accurate. Because the nominal voltage is too high, our varistor will not be protected by any object.

Voltage protection, on the contrary, if the nominal voltage is low, our varistor will be broken down or wrong.

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Motion Sensor Light

[Automatic Switch, Free Your Hands]: Cabinet light has two working modes, Motion & Light Sensor Mode, Always On and Off Mode. In G mode, this counter light automatically turns on when it senses human motion within 10 feet in a dark environment, and automatically turns off after 20 seconds of inactivity. You can use these lights as normal light or safe light.
[Upgraded Version & More Bright Sensor Closet Light]: With 20 LEDs(Not 10 LEDs) for each light, up to 160 lumens, more bright than other LED closet lights in the market, very easy to find what you're looking for and perfect to light up in a large space where there is no light system, like the cabinet, wardrobe, stairs, etc. HIBOITEC motion sensor light is the best choice for you.
[Larger Battery Capacity & Rechargeable]: Built-in 1000 mAh high-capacity rechargeable battery, has larger battery capacity than other led cabinet lighting, easily to charged via USB. After fully charged, these closet lights last for up to 8 hours under on mode and last 1-2 months under motion sensor mode. NEVER replace AAA batteries frequently. Energy Save & Save More Money!
[Two Ways to Install]: Easy to install and remove without any other tools. Using Magnetic Back Design, can stick on any ironwork, allows you to change the its location you need. Or you can use the included tape to attach the iron to any non-ferrous product surface. When you need to charge or change position, you can take down the closet lights at any time.

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