The quality of the adapter is important to avoid incidents
Sunday, December 11th, 2011
As the technology increases at rapid speed, more and more new products in the industry are developed. For example, for the car adapter, there is a new and advanced charging system. It is named as the regulator. However, this kind of product has some disadvantages. These disadvantages may result bad effect.
Security problem of the products is taken into careful consideration. More and more incidents are caused by these problems. So, the health council should pay much attention on these processes. To avoid this kind of unlucky thing, we users should also obey the rules to buy legal things.
The biggest problem is the step-down switch short-circuit fault which occurs when the short circuit between the input to the battery. Batteries do not have the internal protection of nickel-hydrogen batteries. It will lead to security problems. Buck regulators require high-end drive, compared with the low-end topology, which will lead to greater complexity.
Then the Pulse Width Modulation (PWM) controller applications external switch current sensing is more complex than other generations. For short-circuit or load short circuit failure mode, the switch current limit is very important. There is no high-speed switch current limit capability. The battery charger in the event of short circuit can be damaged.
By design it is divided into two parts, and the economy can develop smart battery charger system. Batterycharger is essentially mixed-signal system. For example, the power supply (in this case that the SEPIC regulator) is simulated. On the other hand, charging the end of the timer, fault management, and on / off control is generally digital control, programmable timer and ability required. This can affect the regular management for the car adapter.
This kind of products has affected the market and consumers. In the market, some products fromCanadaare called back on November 18, 2011. This multi-functional digital compressor inCanadahas been made a recall from the market.
The number of recalled products is about 60 807 units. The reason for the recall is that the compressor in the car cigarette lighter when used for too long, 12V car adapter can overheat. Up to now, CanadianTire adapter has received one report of melting, but no casualties and property loss. To this end, HealthCanada advised consumers to immediately stop using the compressor, and with the arrival of a Canadian Tirestore invoice for a full refund.
To get the secure use of products, we have to learn more about the functions of the products. At the same time, the notation on the construction of the product should be read carefully. In this way, the secure problem can be got rid of in advance.
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