A pure sine wave inverter is an electronic device that converts direct current (DC) to alternating current (AC). A sine wave is a continuous wave that describes a smooth repetitive oscillation. Conventional AC power is produced by rotating machines and is mathematically described as a sine wave. It is the ideal waveform for the transfer of AC power with very low harmonic distortion. Pure sine wave inverters produce power which equals or better than the power in home. It use sophisticated technology to protect even the most sensitive electronics. It can be used for digital microwaves ,televisions, fridges, laptops and other electronic equipments. Pure Sine inverters can power just about any AC appliance without risk of damage.
How does a pure sine wave inverter work?
Nowadays, there are a growing number of people using a pure sine wave inverter.A power inverter is an electronic device or circuitry that changes direct current (DC) to alternating current (AC). The input voltage, frequency and output voltage and overall power handling depend on the design of the specific device or circuitry.It allows to have a reliable source of electricity for various appliances even if they are off the power grid. Mode of operation of an inverter is divided in three stages: oscillator, amplifier, and output transformer stage.
Oscillator stage
The inverter generates oscillating pulses through an IC circuit in this stage. Alternate positive and negative voltage peaks generate by these oscillations with a particular frequency. They are very weak and can never be used to power up high current output transformers.So these pulses are sent to the amplifier of the inverter for the required task.
Booster or amplifier stage
The alternate voltage generated by pure sine wave inverter oscillator amplified to high current levels in this stage. Amplified electricity is in AC form, the voltage is still at the battery supply level, which is too low to operate an electrical appliance. To raise the voltage to levels that is suitable for electrical appliances, the amplified voltage is applied to the output transformer secondary winding.
Output transformer stage
In an AC to DC transformer, the power supply is reduced or stepped down to lower specified AC levels through the magnetic induction of the transformer’s two windings. The transformer in a power inverter works in a similar way, but in a reversed manner. The low level AC power from the amplifier stage of the inverter is applied to the secondary windings of the transformer in the output transformer stage. This process results in an induced stepped up voltage, which is used by power inverter to power AC appliances.
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