Power transformers are sometimes fitted with adjustable output windings. This can be used to vary the output voltage to keep the supply at a constant voltage level, despite the input voltage varying considerably. The selection of the appropriate winding is performed by a device which monitors the output voltage and the transformer winding currently in use. If a transformer winding change is required to return the output to the required level, this is done in the AVC scheme provided by Acrastyle.
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Where transformers are connected in parallel, the control of these winding selection schemes is more complex and Acrastyle can provide several options for a standard ‘dual AVC’ scheme. Otherwise we can provide a customised design to meet the most demanding of needs.