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LIFEPAK 20/20e Defibrillator/Monitor Device Description
Functional Description (continued)
A13 Energy Capacitor
The A13 Energy Capacitor is a metallized film capacitor used for energy
storage. The energy capacitor stores energy for both pacing and defibrillation
therapies. The actual capacitance of the energy capacitor is calculated during
the defibrillation calibration procedure. The nominal value is 196 F. The energy
on the capacitor is removed when the device is turned off. Energy is provided to
the A04 Therapy PCB for pacing and defibrillation therapy through the A14
Inductor Resistor. The energy capacitor mounts above the A04 Power PCB by
means of a capacitor support. Wires from the energy capacitor connect directly
to the A04 Therapy PCB.
A14 Inductive Resistor
The A14 Inductive Resistor is used as an internal dump load to dissipate
energy from the A13 Energy Capacitor. Energy is removed (dumped) from the
A13 Energy Capacitor when the device is turned off and, during operation, when
energy remains on the capacitor for an extended period of time. The
A14 Inductive Resistor provides a nominal 5 ohm load in the energy delivery
path. The inductor mounts to the board stack bracket. Wires from the
A14 Inductive Resistor connect directly to connectors on the A04 Therapy PCB.
3-35
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