2/Theory of Operation
1503-0151-000 3/27/97 2-9
2.3. Electrical
The 7900 Ventilator consists of the following electronic/electrical subassemblies or
modules:
• Microcontroller Printed Circuit Board
• Front Panel Assembly
• Power Supply and External I/O Interface Board
• Sealed Lead Acid Battery
• Power Entry Module and Toroid
• Sensor interface board
The specific function of each of these items is described in subsequent sections.
Figure 2-11
Electronic functional block diagram
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