What are Linear Power Supplies?
Linear Power Supplies have a bulky steel or iron laminated transformer. This transformer has two purposes. It provides a safety barrier for the low voltage output from the AC input and reduces the input from typically 115VAC or 230VAC to a much lower voltage around 30VAC. The low voltage AC output from the transformer is then rectified by two or four diodes and smoothed into low voltage DC by large electrolyte capacitors.
