BOC Edwards CV-6SL, Instruction Manual

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The high voltage output PCB assembly contains –
Tuning Capacitors C-22 to C-31
Doubler Capacitors C-5 and C-6
Filter Capacitor C-7
Feedback Divider C-9 and R-2 With Series Res R-6
Output Series Resistors R-1A, 1B, 1C, 1D, 1E, 1F
Low End Current Shunt R-3A, 3B
The metering signals connect to jack J-4. The high voltage output is two terminals at J-7 and J-8.
CAUTION
The maximum voltage on the board is 10kV DC. The operator and maintenance personnel should
NOT access the board with power connected to the system.
Capacitor C-7 is a DC filter capacitors that reduces the output ripple to the 0.5% specified.
Capacitors C-22 to C-31 function as an AC tuning capacitor for the secondary of the high voltage
transformer.
The voltage feedback divider is made up of R-2 and C-9. The combination provides a compensated
feedback signal representing the voltage at 10kV. The low-end shunt is R-3. The 5 ohms provides 3
volts with a load of 600 milliamperes. The current through this shunt represents total power supply
output current and is displayed on the H.V. control panel. R-1 is the power supply output current
limiting resistor.