How old is the 12 volt car inverter in use?
Normally in the battery charging state, in the power failure, the inverter is switched to the working state urgently, and the DC power supplied by the battery is changed into stable AC output. Therefore, the backup UPS is also called off-line UPS. The advantages of the backup UPS power supply are: high operating efficiency, low noise and relatively low price. It is mainly suitable for occasions where the radio waves are not large and the quality of power supply is not high, which is more suitable for family use. However, this UPS has a switching time problem and is therefore not suitable for use where critical power supplies cannot be interrupted. But in fact the switching time is very short, generally between 2 to 10 milliseconds, while the switching power supply of the computer itself in power should be maintained about 10 milliseconds, so the personal computer system is generally not because of the switching time and problems. Backup UPS generally only lasts a few minutes to tens of minutes, mainly to allow you to have time to back up data, and as soon as possible to end the work at hand, and its price is also low. For computer applications that are not too critical, such as individual home users, they can be equipped with low-power backup UPS.
reserve typeThe backup is also called non line uninterruptible power supply (Off-Line UPS), it is only "backup" nature of the UPS, the city electricity direct power supply for the electric device for battery charging (Normal Mode), once the city electric power quality instability or power outage, electric circuit will automatically cut off the power, DC power the pool is converted into AC power over the task (Battery Mode), until the city returned to normal, "UPS only in the power cut will intervene power", but from the AC DC power supply is Fang Bo, only to capacitive load, such as computer and monitor.
UPS has the power inverter in working state, the external alternating current into direct current through the circuit, then through high quality inverter to convert DC to high quality sine wave AC output to the computer. The main function of the on-line UPS in the power supply condition is to regulate voltage and prevent radio wave interference. In the power failure, the standby DC power supply (battery) is used to supply the inverter. Because the inverter is working all the time, there is no switching time problem. It is suitable for occasions where the power supply is strictly required. A major advantage of online UPS power supply is different from the backup power supply for a long, usually for a few hours, also have to ten hours, its main function is to allow you to be working as usual, in case of power failure obviously, because of its special function, the price is clearly a big section. This on-line UPS is more suitable for computers, transportation, banking, securities, communications, medical, industrial control and other industries, because computers in these areas generally do not allow blackouts.
UPS power supply working principle(1) onlineOnline UPS (On-Line UPS) mode of operation for electric and electric equipment is isolated, electricity will not direct power supply for the electric equipment, but the UPS is converted into DC, then diverge, a way to charge the battery, the other way is to supply power to the alternating current. Electric equipment, electric power quality instability or power outage, the battery from charging into electric power supply, until the city returned to normal only to charge, "UPS is involved in the entire process in the whole process of electricity". The utility model has the advantages of output wave and electricity for the same is pure sine wave, and no noise, no influence electrical instability, can supply power to the "inductive load", such as the electric fan, as long as the premise UPS enough output power, can supply power to any use of electricity equipment.
