Quiet Power QP100 Series Installation And Operation Manual - page 5
Quiet Power USB Charger
Installation and Operation Manual
P/N 98-790002 Rev 3
Page 5
1. General Description
1.1 Introduction
This manual is intended to provide information pertinent to the
installation and operation of the Quiet Power converter /
charger. The product is designed to provide a reliable source
for charging devices through USB Type A plugs and,
optionally, charging remote electrical or electronic devices
through the auxiliary charger port.
Its signature “quiet” EMI / RFI ( Electro-Magnetic Interference /
Radio Frequency Interference ) characteristics permit it to be installed in many applications
that could be disturbed by EMI / RFI emissions from other similar devices.
1.2 Equipment Description
The Quiet Power line of USB chargers are engineered for use in aircraft cockpit or cabin
applications. They provide regulated, filtered D.C. power to common Portable Electronic
Devices (PED) to power these units during flight and charge their internal battery. Devices
that plug in to the USB connectors can draw a total of 3 amps. The QP unit signals the PED
that up to 2 amps are available on the top connector and 1 amp on the bottom connector. A
method referred to as ‘analog negotiation’ is used to signal the PED as to the available
power.
An optional auxiliary charging port is available on certain models of QP1xx chargers. This
port can supply 5, 9, 11, or 12 volts at 1 amp to a device to provide charging or auxiliary
charging current to that device. This port is typically used to power:
• Handheld radios with re-chargeable batteries
• Portable GPS receivers
• Portable standby / backup instrument systems
The auxiliary charger is intended to provide charging capabilities to those devices that might
be used intermittently and not otherwise receive a full charge. For example, connecting the
auxiliary charger to an emergency hand-held radio ensures that the radio is fully charged at
all times.
NOTE: The auxiliary charger is designed as a sacrificial device; if the USB chargers are
supplying full load and the temperature is very high the auxiliary charger will cycle on and off.
The Quiet Power unit is shipped in a container that includes the following materials:
• Installation and Operation Manual
• QP1xx Charging Device
• Power Cable / Wire Harness - ~6’ long
An optional connector kit is available from the manufacturer for the auxiliary charging port to
connect to common handheld devices.