4
Power Supply
The power supply for the ALS-1300 is a voltage regulated current limited supply. It contains 14-volt positive
and negative supplies as well as dual 50-volt 25-ampere continuous (30-ampere peak) fully current limited
supplies. Each PA (power amplifier) module in the ALS-1300 operates from the separate 50-volt sources,
giving a total dc input power rating of 2500 watts to the power amplifier modules.
Power supply to amplifier interconnections are through a heavy-duty cable using a large Cinch Jones connector.
Power Line Requirements
This amplifier ships wired for 200-260 Vac. The maximum average power line current is 12 amperes at 240
volts. Two 250-volt 15-ampere fuses fuse the power line.
Note: 120-volt power mains operation is possible with a reduction in CW or RTTY power. Because average
power is very low, SSB operation is minimially affected by 120 volt operation. Fuse size should be 25 amperes
maximum at 120VAC.
Power Supply Features
• Efficient operation from 200-260 volts ac (12 amperes minimum) and 100-135 volts (20 amperes
minimum)
• Wide range of power line frequencies, 40-400 Hz
• Fully regulated current-limited outputs
• Step-start to limit stress on power supply components
• Exceptional filtering and RFI suppression
• Compact size 13.25” deep x 6.75” high x 10.5” wide
• Light weight design 15 pounds
Power Supply Location
Locate the power supply in a convenient ventilated area near the amplifier location. Do not place the power
supply next to sensitive equipment like audio processors, transceivers, or microphones. For safety, ground the
wing nut stud on the supply rear to your station ground buss. The station ground buss should comply with
national electrical codes. These codes dictate that station grounds must be bonded to the power mains entrance
ground. A station ground that is not bonded to the mains ground does not offer lightning protection!
To Next Page
Loading...
