Power Inverters
A power inverter is an electronic device which can convert 12Volts DC to 240 volts AC. This allows travellers to take 240 volt devices with them, such as laptops, TVs, videos, DVD players etc. While this sounds simple enough, it can prove to be a minefield for the unwary.
In this article we will explain the various types of inverters and their benefits and pitfalls.
Generally there are two main types of inverters for general use.
- Pure sine wave inverter.
- Modified sine wave inverter.
What is a Sine Wave?
Power generated by the electricity authorities is known as alternating current or AC, which consists of 240 volts and a frequency of 50hetrz, which means it cycles in a sine wave form 50 times a second. One complete sine wave starts at a zero point then rises to a positive peak and drops to a negative peak before returning to zero. The diagrams below show the difference as they appear on a device called an oscilloscope.
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Types of Sine Wave Inverters
Pure Sine Wave Inverter
Also known as True Sine Wave Inverter replicates the power delivered through your standard power point in your home or office. They can also in some cases, provide better quality power than that sold by the energy authorities. Therefore the power delivered by the Pure Sine Wave Inverter is the most reliable waveform and assures that sensitive loads will operate without interference or fear of damage. As the name suggests it produces a pure sine wave as seen in the above diagram, which means it is safe for computers, TVs, battery chargers etc.
Modified Sine Wave Inverter
The modified sine wave inverter does not really produce a sine wave, but a stepped or square version of a sine wave. It achieves voltage regulation by varying in width according to battery voltage and load. They are still highly capable inverters and can power most household appliances and power tools. It is a more economical inverter, but be careful not to connect sensitive loads such as laptops, laser printers, microwave ovens, battery chargers etc.
EAC Supplies Specials
300W Pure Sine Wave Inverter
Laptops, recharge batteries, TV's, Fax, etc.
$385.00 inc. GST
600W Pure Sine Wave Inverter
Laptops, recharge batteries, TV's, Fax, etc.
$660.00 inc. GST
1000W Pure Sine Wave Inverter
Laptops, recharge batteries, TV's, Fax, etc.
$920.00 inc. GST
1500W Pure Sine Wave Inverter
Laptops, TV's, Fax, Microwave, etc.
$1300.00 inc. GST
350W Modified Sine Wave Inverter
Recharge power tools or batteries, lights, fans etc.
$176.00 inc. GST