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Figure 8-17.  DC Power Supply
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Section IV.  ELECTROSTATIC DISCHARGE (ESD) AWARENESS
TM 9-254 8-8. Direct Current (DC) Power Supply - Continued c. Power  Supply  Setup  (fig.  8-17).    The  proper  procedure  for  setting  up  and  connecting  a  power  supply  to  a circuit is as follows: (1) Be sure the ON-OFF switch (8) is in the OFF position. (2) Connect power supply cord to a power source of proper voltage and frequency. (3) Turn the VOLTAGE adjust knob (6) fully counterclockwise. CAUTION Always  check  for  the  proper  polarity  of  voltage  necessary  to  operate  the  equipment  or  chassis. Failure to observe voltage polarity could result in damage to equipment or chassis. (4) Connect  one  end  of  a  lead  to  the  -  output  terminal  (4).    Connect  the  other  end  of  the  lead  to  the appropriate terminal of the equipment or chassis. (5) Connect  one  end  of  a  lead  to  the  +  output  terminal  (5).    Connect  the  other  end  of  the  lead  to  the appropriate terminal of the equipment or chassis. (6) Connect one end of a lead to the GND terminal (3) and connect the other end to the equipment ground. (7) Turn ON-OFF switch (8) to the ON position.  Power ON lamp (7) will light. NOTE To  verify  that  the  DC  VOLTS  meter  is  indicating  properly,  use  a  Multimeter  across  the  +  and  - output terminals to read the dc voltage while adjusting the output. (8) Turn the VOLTAGE adjust knob (6) slowly clockwise until the DC VOLTS meter (1) indicates the desired voltage. (9) When finished with the power supply, turn the VOLTAGE adjust knob (6) fully counterclockwise. (10)  Turn ON-OFF switch (8) to the OFF position. (11)  Disconnect leads from the equipment and the power supply. 8-25

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