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2.3 Main Unit
The following diagram illustrates the structure of the patient monitor.
The functional modules/parts of the main unit are described in the following sections.
2.3.1 Power board (AC/DC)
The power board switches AC power to DC power as the output.
2.3.2 Battery interface board
The battery interface board introduces battery power to the internal system. The patient
monitor can also be powered by rechargeable li-ion or lead-acid battery.
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