Difference between C.V.T and U.P.S

1. Constant Voltage Transformer (C.V.T) : It is an instrument used to protect our electronic devices from voltage surges and spikes. It is a kind of magnetic transformer with a capacitor connected across the secondary winding of the transformer. 2. Uninterruptible Power Supply (UPS) : It is used to supply power to devices for a fixed amount of time without stopping even when there is no incoming power supply. 
Difference between C.V.T and U.P.S :

Parameter	CVT	UPS
Power Failure	Does not work in the case of power failure.	Provides backup using power failure.
Battery	There is no battery involved.	The battery is involved for backup purposes.
Power surge and spike	Provides safety against power surge and spike.	IT needs CVT installed inside it for protection.
Power Capacity	500 W or 0.5 KVA.	Few watts to hundred kilowatts.
Main Use	Maintain stable voltage.	Provide backup during a power failure.
Power Persistent	It is almost 8 milliseconds.	Mostly 15-30 minutes.
Components	High-voltage resonant winding and a Capacitor.	Rectifier, UPS Batteries, Inverter, Static Bypass Switch.
Size	Slightly smaller than UPS.	Slightly larger than UPS.
Pricing	Cheaper than UPS.	Costlier than CVT.
Noise	CVT usually creates more noise.	Creates less noise than CVT.

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