Genuine query....

An invertor operates at a Voltage of max 12 V, so how can it run the fans and other appliances which function at no-less than 220V....(Domestic house supply)?
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6 Answers

3
msp ·

if it is so then the invertor must have an inbuilt transformer to increase the voltage output in order to run the fans,and other things.

19
Debotosh.. ·

contact rath sir !!!! his question !!!!!

62
Lokesh Verma ·

A hint/ comment/ addition to the original question!

A battery has DC voltage supply.. The appliances at home need AC. How is that possible?!

3
msp ·

Actually sir this is wat i got since the frequency of the ac oscillator is high our eyes cant recognise the periodic on and off of the home appliances.

1
Ujjwal Sinha ·

a battery has dc voltage supply and appliances at home need ac.
that is possible by using two way switch

1
Shreyan ·

ans to nishant bhaiya's addition:

an inverter has a switchover type design to rapidly change the polarity across the primary coil of a transformer. the battery is connected as a centre-tap as shown in the figure:

however, the waveform (in ideal conditions) is a square wave. but because the circuit inevitably has some internal resistance(or a resistor can be connected if reqd), it functions as an LR circuit and the square waveform is somewhat smoothened out.

in electronic inverters, there are no moving parts and transistors or ICs are used in place of the switch.
the output can then be stepped up for use (to 220V) using a step-up transformer.

pure sine-wave is however not achieved even after using sophisticated circuits and hence there is a kind of humming noise that comes from fans etc. when running them on inverter.

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