There are many types of voltage regulator stabiliser. This device happened to get invented with the need to stabilise the unstable voltage fluctuation. The major reason why there is a voltage fluctuation is because the outer power webs experience a voltage load which is an adaptable double voltage regulator.
The avr boards are the voltage regulators planned to automatically maintain a steady voltage level. It is the only device in the market to maintain or regulate the voltage level. It may also make use of the electro mechanical components.
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