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Can the power adapter be universal?

Can the power adapter be universal?

Usually more and more electrical equipment in my life needs to be applied to the power adapter. There are a lot of mobile devices, it will be applied to the power adapter. So the power adapter can be universal? The following is a small series for you to explain the power adapter can be universal.

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The main purpose and role of the power adapter!

The main purpose and role of the power adapter!

With the progress of mankind, the development of science and technology. Now every family has large or small electrical appliances, of course, can not be separated from the power adapter auxiliary equipment.

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Charger damage analysis

Charger damage analysis

The electrolyte in a lead-acid battery is as valuable as the blood in the human body. Once the electrolyte is lost, it means that the battery is scrapped. The electrolyte is composed of dilute sulfuric acid and water. During the charging process, it is difficult to avoid water loss. The charging mode is different and the water loss is different. Ordinary three-stage charging mode, the water loss during charging is more than twice that of Colin pulse mode! In addition to the natural life of the battery, there is also a water loss life: a single battery loses more than 90 grams of water, and the battery is scrapped. At room temperature (25 ℃), the water loss of ordinary charger is about 0.25 grams, while the colin pulse is 0.12 grams. At high temperature (35 ℃), the water loss of ordinary charger is 0.5g, while the colin pulse is 0.23g. According to this calculation, the ordinary charger will dry the water after 250 cycles, while the Colin pulse will dry the water after 600 cycles. Therefore, Colin pulse can extend the battery life more than double. (Show the Chaowei Company report and draw a graph.)

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Classification of Charger

Classification of Charger

Lead-acid batteries have a history of more than 100 years, and they have begun to adopt the old viewpoints and operating procedures all over the world: the charge and discharge rate is 0.1C(C is the battery capacity) and the service life is longer. In order to solve the problem of fast charging, Mr. Max, an American, published his research results to the world in 1967, charging with a pulse current greater than 1C rate, and discharging the battery during intermittent charging. Discharge is beneficial to eliminate polarization, reduce the temperature of the electrolyte, and improve the ability of the electrode plate to accept charge.

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The working principle of the charger

The working principle of the charger

220v AC is filtered by T0 bidirectional filter to suppress interference, D1 is rectified into pulsating DC, and then filtered by C11 to form a stable DC of about 300V. U1 is a TL3842 pulse width modulation integrated circuit. Its 5 pins are the negative pole of the power supply, 7 pins are the positive pole of the power supply, and 6 pins are pulse output to directly drive FET Q1(K1358). The 3 pins are limited by a large current. Adjusting the resistance value of R25(2.5 ohms) can adjust the large current of the charger. The 2 pins are voltage feedback, which can adjust the output voltage of the charger. 4 feet external oscillation resistor R1, and oscillation capacitor C1. T1 for high frequency pulse transformer, its role has three.

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Tianchang Senlin Electrical Technology Co., Ltd.

Wang Yusen:+8618949728222

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