The Thermal Dynamics 9-5953 is a critical internal component designated as the FET/CAP PCB Assembly. This printed circuit board integrates the Field Effect Transistors (FETs) and the primary Capacitor bank, serving as a core element of the inverter power topology in compatible Thermal Dynamics plasma cutting systems, such as the Cutmaster series. The board is engineered to handle high-frequency switching operations that convert rectified DC power into the controlled high-voltage output required for plasma arc generation.
As an OEM replacement part, this assembly is manufactured to the exact schematics and quality standards of the original equipment. The FETs on this board are responsible for the rapid switching of power, while the capacitors smooth the voltage ripple and provide the necessary energy storage for arc initiation and maintenance. Failure of this board typically results in a complete loss of output power, error codes related to the power module, or the inability to sustain a pilot arc. The board features heavy-duty traces and high-quality components designed to withstand the thermal and electrical stresses inherent in industrial plasma cutting environments.
Technicians installing this part should verify the integrity of upstream and downstream components, such as the input bridge rectifier and the output diodes, as failures in these areas can sometimes cascade to the FET/CAP board. Proper handling procedures for static-sensitive devices (ESD safety) must be observed during installation. The 9-5953 ensures that the pulse-width modulation (PWM) signals are correctly translated into power output, maintaining the machine's duty cycle and cutting capacity.
Key Technical Specifications:
| Additional Information |
|---|
| Product Type:Circuit Board, Replacement Part |
| Part Number:9-5953 |
| Component Type:FET/CAP PCB Assembly |
| Compatible Equipment:Thermal Dynamics Cutmaster Series |
| ----- new values below ---- |
| Part Number:9-5953 |
| Component Type:FET/CAP PCB Assembly |
| Compatible Equipment:Thermal Dynamics Cutmaster Series |
| Brand:Thermal Dynamics |
| Product Type:Circuit Board, Replacement Part |
