Elenco Electronics XP-720 Instruction Manual

Elenco Electronics XP-720 Instruction Manual

Elenco electronics xp-720 power supply: user guide

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POWER SUPPLY
MODEL XP-720
Instruction Manual
Elenco Electronics, Inc.
Copyright © 1997 Elenco Electronics, Inc.
Revised 2000
REV-A
753270

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Summary of Contents for Elenco Electronics XP-720

  • Page 1 POWER SUPPLY MODEL XP-720 Instruction Manual Elenco Electronics, Inc. Copyright © 1997 Elenco Electronics, Inc. Revised 2000 REV-A 753270...
  • Page 2: Operating Instructions

    5. Care must be taken not to exceed the current reading, as the supplies will turn themselves off if overheated. 6. The Model XP-720 has an added feature of having the positive and negative supplies being able to be stacked to give up to 30V at 1 ampere.
  • Page 3: Circuit Description

    XP-720 to give you years of trouble-free performance. The Model XP-720 Power Supply features three solid-state DC power supplies and a 12.6VAC center tapped output. The first two DC supplies consist of one positive and one negative 1.5 to 15 volts at 1 ampere. The third has a fixed 5V at 3 amperes.
  • Page 4 The 1N4001 has peak current rating of 10 amps. Regulator Circuit The regulator circuit in the Model XP-720 Power Supply consists of a LM-317 integrated circuit. This IC is specially designed to perform the regulation function. Figure 6 shows a simplified circuit of how the LM-317 IC works.
  • Page 5: Warranty Policy

    This concludes the discussion on the operation of the XP-720 Power Supply. Your power supply has been tested and conforms to our rigid requirements on performance and durability. It is guaranteed to be free of defects in workmanship, materials and construction for a period of 2 years. If this product should fail during normal use within the first 3 months from the date of purchase, Elenco will repair or replace the unit at no cost.
  • Page 6: Parts List

    PARTS LIST DESCRIPTION RESISTORS 1/2W (red-violet-gold-gold) 1/4W (brn-gray-brn-gold) Potentiometer CAPACITORS 10 F Electrolytic 2,200 F Electrolytic 4,700 F Electrolytic SEMICONDUCTORS 1N4001 Diode 1N5400 Diode MPSA70 Transistor 2N6124 Transistor LM-317 IC LM-337 IC LM-7805 IC MISCELLANEOUS Transformer PC Board Fuse 1A Rocker Switch Cover Chassis...
  • Page 7: Schematic Diagram

    SCHEMATIC DIAGRAM...
  • Page 8 Elenco Electronics, Inc. 150 W. Carpenter Avenue Wheeling, IL 60090 (847) 541-3800 http://www.elenco.com e-mail: elenco@elenco.com...

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