This is the bare PCB of a DC high voltage regulator, intended for tube preamplifier application. The circuit is based on the power supply circuit of Matisse of UK ( which is already out of business).
AC input : 360Vx2 AC. ( from the secondary of an appropriate transformer)
DC output : 110VDC to 280VDC.
Board Thickness : 2.0mm
Dimension : 120mm x 124mm
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