Laerdal Medical AS 20-10494 ユーザーズマニュアル
Att 1 to 00054577 rev.B
Resusci Main Board Electronic Design Description
Page: 4 of 9
5. Dimensions
Figure 2. Dimension in mm
6. Power
6.1. Sources
Battery:
Minimum battery voltage: 3,6V. Board is designed to use minimum 4 alkaline cells connected in series
with a battery cutout voltage of 0,9V per cell
Maximum battery voltage is 14V
USB power:
Input voltage 5V±5%
Minimum battery voltage: 3,6V. Board is designed to use minimum 4 alkaline cells connected in series
with a battery cutout voltage of 0,9V per cell
Maximum battery voltage is 14V
USB power:
Input voltage 5V±5%
6.2. Power source switching
Circuit is designed to use USB power when this is present. Main MCU and BLE SoC will always be
powered but will be in a low current mode (stop mode) when system is off.
Logic:
USB voltage > ca.2,9V → USB is source
USB voltage < ca.2,9V → Battery is source
powered but will be in a low current mode (stop mode) when system is off.
Logic:
USB voltage > ca.2,9V → USB is source
USB voltage < ca.2,9V → Battery is source