Can we charge mobile phone on an inverter / UPS ?

Question

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Can we charge mobile phone on an inverter / UPS which is used for a personal computer.

There are two types of mobile phone charger available.
1. Using transformer (old model) heavy weight.
2. Light weight charger (using electronic circuit instead of transformer).

Someone told me that the out put of inverter / ups is NOT pure AC. That is, not pure sine wave but similar to square wave.

If we connect the type 2 (see above) charger to the A.C.output of inverter , then it will damage the charger. (as per my friend his charger got damaged).

Could someone technically explain the cause / truth.


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Answer 1

The cheapest inverters put out a pretty rough square wave. It is possible that this could damage a mobile phone charger as the transformer in the charger is an INDUCTIVE load. As for transformerless (switch mode) chargers, they sometimes don't produce an output at all when looking at a square wave input. Using such an inverter to power a soldering iron or cup heater would be fine as these are RESISTIVE loads and are not affected by waveform. I won't go into the math and magnetic permeability etc....

However, you CAN get inverters that are "modified sine wave" but they are considerably more expensive. These will run your charger just fine. They also have generally higher output power.

Since your inverter is running a computer it is almost certainly a modified sine wave inverter and will be OK.

Answer 2

Mobile Inverter