The refrigerator protector is to ensure the normal operation of the refrigerator when the voltage is unstable, usually socket type.The refrigerator protector has the characteristics of small size, light weight, low cost, simple structure, energy saving, normal operation of the refrigerator, and extending the service life.
Refrigerator protection device price
The price of the refrigerator protector is not expensive, usually about tens of yuan. The difference between its brand and model is the main influencing factor of the price of the refrigerator protector.In addition, the more refrigerators sold by some sellers, the greater the price discount, which is cheaper.Therefore, the difference between sellers and time points also affects the price of the same refrigerator protector.Refrigerator protector price introduction, (unit: yuan) (1) Guangli KSD305, KSD9700 refrigerator overheated protector ￥ 1.80 (starting batch 100-9999pcs) ￥ 1.50 (10000-19999pcs) ￥ 1.302) Boyin Star B-X40B refrigerator protector ￥ 12.00 (starting batch 1-9) ￥ 10.00 (starting batch ≥10) (3) South Island NB-ZF3C-10 refrigerator protector, product series: nb ￥18.00 (100-499 from a batch) ￥ 17.00 (starting batch ≥500)
Refrigerator protector principle
Refrigerator protector principle: Simple refrigerator protector circuit, it consists of three parts: lower -voltage rectification, memory delay circuit and switch controller.Anti-voltage rectifier circuit consists of a diode VD1-VD4, voltage voltage pipe VD7 and capacitor CL, C2.When the protector is connected to 220V AC power, the two ends of the capacitor C2 can output a stable DC power at about 12V for IC power.Memory delay circuit consists of the time -based integrated circuit IC and its peripheral component C3, R, VD5.The switch controller consists of relay K and its normally closed nodes and three -hole socket XS.After connecting the power supply, the 12V DC is charged to the capacitor C3 through the resistor R. Because the charging requires a certain time, the threshold end of the IC is at a high potential., The power of the refrigerator is cut off.With the continuous charging of the C3, the trigger electrical position of the IC continues to decline, the IC is placed as the output high level, the relay K release, the normal closed contact K suction and combination, the output of the socket output 220V AC electricity, and the refrigerator is powered on.When the power grid is broken, the C3 storage charge is quickly released through some resistance and VD5 in the IC, and the next delay preparation is made for the power grid to restore power supply.
How to use the refrigerator protector
Pay attention to these points of the refrigerator: 1. Try to place the refrigerator in the place where you shade to avoid direct sunlight.Because the temperature around the refrigerator increases 5 degrees, the inside increases by 25%.2. The food stored in the refrigerator should leave a gap of about 10mm between the food and the box wall and the food and food.The middle layer of the refrigerator cannot be too full. It is conducive to the circulation of cold air.3. minimize and shorten the door opening time and number of times.Think about what you need to get before opening the refrigerator, and what you need to put in, and do it once.Because each time the refrigerator is opened, the temperature in the box must be restored, and the compressor must work.4. After the hot summer power outage, the refrigerator will take a long time.You can use small -capacity plastic bags to be frozen into ice cubes, and keep it in the freezer, so that the temperature in the refrigerator during power outages will not increase too fast.5. The temperature at night is low, which is conducive to the heat dissipation of the condenser.So if you want to freeze ice cubes or make cold drinks, it is best to make it at night

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