Adapter Is A Transformer
The adapter is also called an external power supply (switch adapter), which is a small portable electronic device and electrical appliance of the power inverter, it is due to the fact that in real life, electronic devices are often not directly used in household electricity, because the home is used 220 volts of the power supply voltage, while the general electronic products generally require a power supply voltage of 5 volts to about 20 volts. So the role of the adapter is crucial (module power), especially if you go to the United States and other countries, the voltage and China's different, then more need to 220V 110V transformers.
With it, we can use these electronic products conveniently and safely. Adapter So what is the role of the adapter?
Composition and application of adapters (adapter working principle)
Adapters are common to small electronic products such as mobile phones, LCD monitors and laptops. Generally consists of shell, power transformer and rectifier circuit, according to its output type can be divided into AC output and DC output type, according to the connection can be divided into wall and desktop.
It is widely used in telephone machine tools, game consoles, Adapter language repetition machines, Walkman, notebook computers, cellular phones and other equipment.
Adapters are widely used in industrial automation control, military equipment, scientific research equipment, LED lighting, industrial equipment, communications equipment, power equipment, instrumentation, medical equipment, semiconductor refrigeration system heat, air purifiers, electronic refrigerators, LCD monitors, LED lamps, communications equipment, audio-visual products, security, computer chassis, Adapter digital products and instrumentation and other fields, and in these areas have a negligible role. So what are the roles of adapters?
The role of Adapter
In general, adapters are transformers and Rectifiers. Home AC power is 220v, and our computer is DC 12v (as if), so it is possible to be sure that the adapter is the transformer and rectifier. Adapter is a transformer, then we should know that the AC 220v through the transformer variable, through the rectifier to DC, here is the consumption, and these consumption will be converted to heat, so the adapter will be hot is normal.
The transformer is made of silicon steel sheet, the transformer after power, the production of magnetic flux, magnetic flux will incur a force between the silicon steel, resulting in a buzzing sound, this is normal. But the sound of the earth is not normal, a lot of reasons: 1, AC voltage instability. 2. Chip breakage. 3. Short circuit between turns. 4, component damage and so on. By the way, the adapter's role is to convert alternating current into a DC electrical product
Adapter space is generally built-in, Adapter the general size of the adapter is not small, small volume of the machine is external, in order to save space, the replacement is also convenient, adapter with the mains, high voltage, put the machine inside more dangerous