RF Board
5-18 LigaSure Vessel Sealing Generator Service Manual
RF Board
The RF board incorporates a variety of processing circuits for the LigaSure
generator, providing the key function of generating the output RF energy for all
operative modes. It also provides the main integration function for all sub-
assemblies interfaced within the LigaSure generator.
The following list identifies all the operative modes, process circuits, and
integration functions provided by the RF board assembly:
• Operative modes
seal
macrobipolar
bipolar
• RF driver circuit
• RF output circuit
• RF output relays
• EKG output relay
• Primary sense circuits
• Redundant sense circuits
• Single fault protection circuit
• Heat sink
• Isobloc circuit
• Integration functions
low voltage power supply interface
controller Interface
high voltage power supply interface
footswitch interface
handswitch interface
expansion port
RS 232 interface
Warning
High frequency, high voltage signals that can cause severe burns are present in
the RF output of the LigaSure generator. Take appropriate precautions when
testing and troubleshooting the output circuitry of the generator.
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