Class H power supply schematic, version 0.2, fuse type, marked final, in a 1.39 MB PDF. A Class H supply switches or tracks the amplifier rails according to signal level to cut dissipation in the output stage. The diagram helps with building or servicing the rail-switching circuitry, rectifiers and fusing. Confirm that your board matches version 0.2, and check fuse ratings and capacitor voltages before powering up.
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