High Voltage supply PCB
Budget: ₹37,500 – ₹75,000 INR
(Please refer to the attached PDF)
The aim of this project is to design a power supply that can generate 30-100kV and source 20mA current. The supply has to be bipolar in nature as it allows us to reduce the insulation requirements. The input to this supply will be a 24V source. This supply will be a pules supply, meaning it will not constantly be running. Additionally, there should be a secondary power source which generates a DC voltage in between
Additionally, The supply should be able to source around 70W (max) with the cathode as the reference (let us call this an auxiliary supply). This means if the potential set point for the high voltage side is 60kV, the anode will be at 30kV and the cathode at –30kV. Simultaneously, if the auxiliary supply is set at a potential of 3V, then the auxiliary supply should generate 3V with respect to the cathode. To clarify a bit more, the 3V generated from the auxiliary supply will be developed with respect to -30kV, i.e., the auxiliary supply will be at -30kV+3V. The auxiliary supply should generate the voltage for a defined time before the high-voltage supply is energized. This “defined time” should also be configurable using switches/potentiometers or other solutions. It is preferred if this supply works on current control feedback instead of potential control.
The control of the high voltage potential and auxiliary supply is open for discussion. It can be based purely on software (digital communication between this PCB and the control PCB) or can be voltage-dependent feedback (ADC/OpAmp based on this PCB, with the control signal being generated on the control PCB).
Here I have used an example values of 60kV and 3V, but both these values should be programmable. The auxiliary supply will vary from 0-11V with a max current consumption of 6.3A.
Also, adhere to the size constraints (200x150mm). To achieve the dimensions, the PCB can be split into two to reduce the size, provided the height of the entire stack does not cross 60mm (including all shielding and insulation). Lastly, insulations and materials can be chosen at the designer’s discretion but should be thoroughly discussed with the electrical team (method of application, place of procurement, etc.).
The aim of this project is to design a power supply that can generate 30-100kV and source 20mA current. The supply has to be bipolar in nature as it allows us to reduce the insulation requirements. The input to this supply will be a 24V source. This supply will be a pules supply, meaning it will not constantly be running. Additionally, there should be a secondary power source which generates a DC voltage in between
Additionally, The supply should be able to source around 70W (max) with the cathode as the reference (let us call this an auxiliary supply). This means if the potential set point for the high voltage side is 60kV, the anode will be at 30kV and the cathode at –30kV. Simultaneously, if the auxiliary supply is set at a potential of 3V, then the auxiliary supply should generate 3V with respect to the cathode. To clarify a bit more, the 3V generated from the auxiliary supply will be developed with respect to -30kV, i.e., the auxiliary supply will be at -30kV+3V. The auxiliary supply should generate the voltage for a defined time before the high-voltage supply is energized. This “defined time” should also be configurable using switches/potentiometers or other solutions. It is preferred if this supply works on current control feedback instead of potential control.
The control of the high voltage potential and auxiliary supply is open for discussion. It can be based purely on software (digital communication between this PCB and the control PCB) or can be voltage-dependent feedback (ADC/OpAmp based on this PCB, with the control signal being generated on the control PCB).
Here I have used an example values of 60kV and 3V, but both these values should be programmable. The auxiliary supply will vary from 0-11V with a max current consumption of 6.3A.
Also, adhere to the size constraints (200x150mm). To achieve the dimensions, the PCB can be split into two to reduce the size, provided the height of the entire stack does not cross 60mm (including all shielding and insulation). Lastly, insulations and materials can be chosen at the designer’s discretion but should be thoroughly discussed with the electrical team (method of application, place of procurement, etc.).