Digital Servo Voltage Controller
Product Details:

Input Voltage	160 V - 260 V
Output Voltage	220 V
Automation Grade	Automatic
Efficiency	98%
Material	Mild Steel
Phase	Single Phase
Frequency	50/60 Hz
Warranty	1 Year
Display	Digital
Country of Origin	Made in India
Brand	Selvon

The control circuit continuously monitors the output voltage and looks for any error in the output. Any deviation in the output is immediately corrected by switching on the Servomotor. The motor coupled to the variable auto transformer increases / decreases the voltage to primary of buck / boost transformer. The buck / boost transformer adds / substracts the voltage to mains so that the output remains within the set limits.