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Introduction
The Barrett 2022 Power Supply is designed to provide regulated power to one 2050
transceiver and one accessory such as a 2023 modem. The 2022 also has provision for a
battery backup system in case of mains power failure. The battery backup incorporates a true
automatic no break change over circuit with battery charging system.
Specifications
Output Voltage
13.8 VDC
Output Current
21 Amps Max
Input Voltage
88-256 VAC @ 50/60Hz auto ranging.
Input Connector
IEC Type
Overload Protection
22 Amps - Auto-recovery
Over Voltage Protection
Auto - Recovery
Battery Charge Voltage
13.1 VDC
Battery Charge Current
3 Amps Max
Operation
The Barrett 2022 is a low noise switch mode power supply that is capable of delivering 13.8V
at 21 Amps continuously with a mains input supply that can vary from 88 VAC to 256 VAC.
This combined with the ability of the power supply to operate with a backup battery, makes the
2022 ideal for use in areas where mains voltages vary dramatically and occasionally fail
altogether. An internal fan provides airflow to keep the power supply operating at a safe
temperature level even during the most demanding duty cycles.
The 2022 is normally operated from a mains supply. When the mains supply is connected and
the power switch is in the ON position, the upper Green indicator LED, next to the power
switch, will be illuminated. When the 2022 power supply is operated with the optional backup
battery connected, again if the mains supply is available, the upper Green indicator LED will be
illuminated. If the mains supply fails the 2022 will automatically switch over to the backup
battery. In this case the lower Indicator LED will show a Green indication. The lower indicator
LED will change to indicate RED and the battery will be disconnected when the battery voltage
falls below a safe level.
If this occurs you must either wait for the mains supply to be re-established or a fresh battery
should be connected to the power supply. When the mains supply is re-established the 2022
power supply will again take the load and the battery will commence charging.
The 2022 Power Supply also contains an 8ohm 2 Watt loudspeaker for use when the 2050 is
configured as a base station. The volume for this speaker is controlled from the front panel of
the 2050 Transceiver.
The 2022 is supplied in a standard bench mounting configuration. Several other mounting
options are available including a 19” Rack mounting kit that can mount one or two units or a
set of stacking plates can also be supplied to secure two, three or four units together.
