M611

M611/M611A POWER SUPPLY The M611/m6I1A Power Supply is designed to be used as a primary power supply for WBS TTL Logic Cards utilizing 5 V regulators_ One output delivers 12 volts at a maximum load of 6A _ A second output, rated at 20 volts, 250 mA is provided to supply a negative biasing voltage. Two power supply versions are available.

The M611 operates from a 115v AC, 60 Hz power source while the M6IIA operates from 230v AC 50 Hz . Primary taps at the power transformer permit ac input variations of +/ - 10% to be accommodated_ Two separate secondary windings in conjunction with two bridge recti- fiers are utilized to provide complete electrical isolation between the two outputs.

The primary and secondary fuses are conveniently located at the front panel _ A power ON/OFF switch and a LED indicator are also mounted on the front panel AMI connections are made via the MF6 frame receptacles_ The MF6 connectors are wired for the required ac and dc operating conditions of the M611/M6IIA module Modules may therefore be interchanged without affecting the operation of the system _ The module size of 5.1 X 3.4 X 13.7 inches allows three M611/M6IIA power supplies to be accommodated in one standard rack mounting (191 X 3.5H) MF6 equipment frame_ Perforations in the mounting frame and module assure adequate vertical ventilation by natural convection 2-1

M611/M6I1A POWER SUPPLY Output Voltage: Output 1 : 12 volts dc nominal _ Output 2: 20 volts dc nominal_ Load Current: Output 1 : 6 A maximum Output 2 : 250 mA maximum. Ripple: Output 1 : 2.5 volts P/p maximum_ Output 2: 1 volt P/p maximum Power Requirements: M611 115 volts ac, 60 Hz . nominal; prir mary strapping provided for 105V ac and 125V ac.

M61IA 230 volts ac, 50Hz _ nominal ; primary strapping provided for 210v ac and 250v ac. Ambient Temperature: 0 to 60 degrees Celsius Dimensions: 5.1" wide X 3.4" high X 13.7" deep (130 mm X 83 mm X 336 mm) _ Weight: 8.5 Ib _ (3.85 kg) - 1-1