The EB-903/237 PS is designed for 50-75W Class-A (EB-903/237/75) and for 150W Class-AB (EB-903/237/150) Mono Blocks (The schematic is shown for the 50/75W PS). It contains separate power supplies for the driver stage and the output stage, using HEXFRED and/or FRED diodes. The main electrolytics (47000uF or 100000uF) are not included on the board and not included in the kit. Be careful when installing/connecting the diodes/capacitors, wrong polarity can cause damages to your equipment.
The board also includes two independent timers, one for the slow-turn-on circuit (Q1) and an optional one for the output relay(s) on the driver boards. The mains transformer should be minimum 600VA for the 50W and 900VA for the 75W Class-A MILLENNIUM Mono Blocks. The timers need a separate 10VA mains transformer with a 12VAC secondary
|
