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Depending on the architecture of the UPS, there are three primary operational schemes: , Line-Interactive , and On-line (Double Conversion) . 1. Off-line (Standby) Scheme This is the simplest and most common scheme for home PCs.

Incoming AC power is immediately converted to DC (rectifier) and then back to perfect AC (inverter). The load is always powered by the inverter. shemy raboty ibp

Activates when utility power fails completely or fluctuates beyond the AVR's corrective range. Depending on the architecture of the UPS, there

The UPS passes utility power directly to the connected equipment while simultaneously charging the battery. there are three primary operational schemes: