I know of two ways: (the following things in the sale of electronic parts and online Taobao are sold)
1: 12V battery with a DC-AC power inverter (DC12V to AC220V), loaded with a computer power supply plugged into the back of the DC-AC power inverter in the AC220V output socket is OK. (dozens of dollars to hundreds of dollars) (the higher the power the higher the price)
The following car inverter 180w?Car charger 12V to 220V?Coke cans car power supply {DC DC input can not exceed 16V}
Product Features
This product is a 180W DC-AC power inverter (DC12V to AC220V) row of plugs for the universal socket. And with USB charging port (5VDC max 2A). To the office, communication, entertainment equipment and other equipment using 220V voltage to provide power, is driving out of business, travel standing tool.
Mainly applicable to: laptop computers, iPad, cell phones, cameras, digital cameras, walkie-talkies, lighting fixtures, TVs, DVD players, game consoles, printers, electric shavers, some medical emergency, field detection, public security, rescue equipment and other types of electronic and electrical products, can output the same AC power as the home power supply!
The inverter is normally warm after use. Output voltage value and output frequency accurate and stable, load dynamic stability, load adaptability, the actual output power will not be less than the labeled power. This product with short-circuit, overload, over-temperature, low voltage, over-voltage five major protection functions, will not cause damage to external electrical appliances and the car itself, will not forget to turn off the use of equipment caused by the vehicle can not be started, the built-in electronic fuse, safe and more reliable.
Please place the inverter away from heat-sensitive objects and avoid direct sunlight.
2: ? Use DC-DC?boost module IN3.5-35V?OUT5-56V with indicator, adjust the voltage up to the value of the computer's suitable voltage, connect a plug into the computer can be used. (Ten to thirty dollars) (the higher the price of the higher power)
The following is the introduction of the use of the boost module:
Note: When you test if the output voltage is not higher than the input voltage, please adjust the potentiometer clockwise, the output voltage will rise. Remember please do not adjust counterclockwise to try to do the buck module use, you must ensure that the set output voltage is higher than the input voltage to avoid damage to the module!
IN+? Input Positive?IN-Input Negative?OUT+ Output Positive?OUT-Output Negative!
Indicators:
Input voltage range: 3.5V-35V (must ensure that the set output voltage is higher than the input voltage)
Output voltage range: 5.0V-56V
Maximum input current: 3A (according to the conservation of power to calculate the output current under the rated conditions
Uin*Iin*Efficiency=Uout*Iout)
Uin*Iin*Efficiency=Uout*Iout Iout)
Input continuous working current: 2A (the ratio of output voltage and input voltage can not be greater than 3 under good ventilation and heat dissipation)
Dimensions: L*W*H?4.3cm*3.0cm*1.2cm
Enhanced heat dissipation with special heat sink: