Monday, April 4, 2011

Charger

Charger usually refers to a low voltage dc to ac conversion to the equipment. Chargers in various fields, especially in wide use life field is widely used in mobile phones, cameras and so on common electrical appliances. The charger is to use power electronics semiconductor devices, the voltage and frequency fixed ac transformation for the dc static converter device. In order to work power or battery backup power for the power of the occasion, chargers have widely application.
Charger introduction
Chargers have many, such as lead-acid battery charger, valve-control sealed lead-acid batteries testing and monitoring, cadmium nickel battery charger, ni-mh battery charger, lithium ion battery charger, portable electronic devices lithium ion battery charger, lithium ion battery protective circuit multi-function charger, electric car battery charger, car charger, etc.
Use charger for the battery, must the battery charging specifications selecting a suitable specifications of chargers, and correct connection. Otherwise you will appear appliances damage or safety accidents, the proposal is chosen, because its protection intelligent charger perfect. General won't appear accidents.
According to energy use means the charger is classified
Ordinary charger: electricity, with ordinary families provide energy by transformer.
Solar charger: using solar panels collect solar energy
Wireless charger: using the principle of electromagnetic coupling, etc
Hand charger: utilization of human
Emergency charger: dry by quarter to dry, few sections provide emergency charging, general probably can provide more than 10 minutes of electric power.
The kinds of product by use the charger is classified
Cell phone charger
Laptop charger
Electric vehicle chargers
Large charging machine etc
Camera charger
Electric toy charger
According to the classifications. Use mode charger
Senior business filling: business travel charger, charging speed and very safe, the price is higher; general charger
Seat type charger: exterior unique, novel appearance, easy to carry, optimum filling capacity of 200-3000mAH lithium ION (LI - IO nimh (NI fd-mh) cell phone battery, built-in intelligent identification circuit, it can automatic conversion charger with applicable battery output polarity is negative, charging excellent results, it is household/travel phone ideal partner;
USB charger: take USB output interface, protect to MP3/4, digital camera, etc to be charged;
Line type charger: general cell phones fill continuously;
Car-mounted charger: universal power supply in the car for the power supply device charger.
According to the raw material classification. Charger
Nickel nickel-metal hydride cadmium charger
The lithium ion battery charger
Lead-acid battery charger
Charger structure
1, shell
2, input line, output line
Three, PCB, heat sink, all kinds of electronic components (capacitor, resistor and single-chip microcomputer, light lotus root and MOS tubes, diodes, triple tubes, switch tube) 

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