inverters

[rohanbhatia]

can anyone pls explain me the working of an inverter....the battries in the inverter gives very high voltage but from inverter me get very less voltage supplies...how is it so???

[Externet]

An inverter is a device that converts direct current DC as from a battery into alternating current AC as the domestic outlet electrical power.

 

Batteries to operate them are usually 12V; 24 V; 48 V and an oscillator in the device allows the voltage transformation to higher voltage than the battery supplies, but at less current.

Typical is turning 24VDC into 120VAC

 

The DC current drawn from the batteries is much higher than the current supplied at the AC output because what is being converted is power.

 

The multiplication of the batteries DC voltage times the batteries DC current is the Watts consumed.

Example: 24V x 5 Amperes = 120 Watts power

The multiplication of the 'inverted' 120 V x 1 Ampere = 120 Watts is the power delivered by the inverter device.

 

These figures do not take losses in account.

 

Hope it helps.

[mathias]

And these losses are usually much to high when you get the wrong inverter. I know people who use 240v inverters to convert 12v car battery input to 240v via a converter and then down to 20v or 30v to use with their laptops and mini fridges in cars.