FAQs - Voltage Stabilisers

Questions and answers regarding automatic voltage stabilisers (AVS) and automatic voltage regulators (AVR).

Regulation is control of an ac/dc output voltage to within a set specification.

Isolation or Galvanic Isolation is a separation of the input and output supplies to a device in such a way that energy flows through a field rather than through electrical connections.

Ferroresonance or Ferroresonant is a term applied to resonant interactions between capacitors and saturable iron-core inductors. During resonance, the inductive reactance increases to match the capacitive reactance and current flow is limited by the system resistance. The phenomenon is used, for example, within ferroresonant transformers of which Constant Voltage Transformers (CVTs) are a configuration.

Automatic Voltage Stabiliser (AVS) is a device to stabilise the mains power supply voltage to a load. Also known as an Automatic Voltage Regulator (AVR) or Voltage Regulator (VR).

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