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Pyramid PHASE III by Tenna model PS-20
Precision Regulated DC Power Supply
Power Supply Specifications:
20AMP. With Surge Protection
Electronic Overload Protection
Instant Automatic Reset
For reference; C1, D1, & D2 are labeled on the regulator board, however, they are not installed there; they are located on the larger PCB with the five larger filter capacitors. TR1 is not on the regulator board either; it is mounted on the rear heat sink.