Based on its load handling capacity its internal circuit units are changing. But few of them remain in every design and those are given below:
- Control board
- LED display
Internal units of automatic voltage stabilizer
We know that transformer works based on mutual induction. In voltage stabilizer step down transformer is being used that works in two modes. The first one is Buck or step-down mode when mains or input AC power is higher than the defined value. And the second one is Boost or strep-up mode when mains power is lower than the desired value.
In this mode, the secondary winding of the transformer is connected in such a way that secondary output voltage is deducted from incoming AC voltage. In case of a rise in mains power, the electronic circuit in the stabilizer switches the relay that switches deducted output voltage.
In this configuration mode, the mains voltage is given to the transformer and this voltage is normally stepped down. The secondary winding of the transformer is connected in such a way that the secondary output is added to the primary or mains supply voltage. In case of low mains power, the electronic circuit in the stabilizer switches the corresponding relay to boost the input supply.