Also known as an Automatic Voltage Regulator (AVR) or Voltage Regulator (VR), an Automatic Voltage Stabiliser (AVS)stabilisesthe mains power supply voltage to a load.
It isa feature ofLine Interactive uninterruptible power suppliesandprovides protection from power problemssuch as sags, brownouts and surges.
Automatic Voltage Stabilisershave a wide input voltage window (+20/-40%).If the input supplyvoltage is too low, the AVSuses a transformer toboost (step-up)the output voltage. On the other hand, if the input supply voltage is too high, theAVSreduces thevoltageto a safe operating range(this process isknown as buck or step-down).
Output voltage tends to track the input voltagewindow as there’s no need for any voltage regulation.
SomeAVS incorporate a filterthat provide both the load andthe stabiliser itself with limited protection from spikes, transients and electrical noise.
