HT Capacitor Board Layout
The SRPB HT capacitor Board
The HT capacitor board is cut from a piece of RS 1/8" insulating SRPB board. The holes are drilled in it to allow passage of air over the 10 47k capacitor voltage equalising resistors. The board holds 10 220 microfarad 450v electrolytic capacitors.
Board with capacitors mounted
The assembled HT capacitor board
The assembled board is mounted on 20mm M3 pillars and screwed to the side of the case in front of the vent holes. The 5mm holes drilled in the board provide airflow over the equalising resisistors.