Elenco Electronics XP-660 Instruction Manual
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Elenco Electronics XP-660 Instruction Manual

Variable regulated
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Elenco
Copyright © 2005, 1990 by Elenco
No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher.

POWER SUPPLY

MODELS XP-660 / XP-760
Variable Regulated
Model XP-660
Model XP-760
Instruction Manual
®
Electronics, Inc.
®
Electronics, Inc. All rights reserved.
Revised 2005
REV-H
753660

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Summary of Contents for Elenco Electronics XP-660

  • Page 1: Power Supply

    POWER SUPPLY MODELS XP-660 / XP-760 Elenco Copyright © 2005, 1990 by Elenco No part of this book shall be reproduced by any means; electronic, photocopying, or otherwise without written permission from the publisher. Variable Regulated Model XP-660 Model XP-760 Instruction Manual ®...
  • Page 2 Specifications for Model XP-660 @ 120VAC input 0-20V Supplies Input Voltage 110-135VAC 60 Hertz Output Voltage 0-20VDC Variable Output Current 0-1A over 0-20V range Load Regulation Less than .1V over 0-20V range Line Regulation Less than .1V 110V to 130V...

  • Page 3: Circuit Description

    ® XP-660 and XP-760 use the same basic power and regulator circuit. difference is in the display function. The XP-660 has two 0-1mA analog meters. These meters convert to a voltmeter by placing a 20kΩ resistor in series or an ampmeter by placing a .39Ω shunt resistor across the meter.
  • Page 4 100. The heart of the regulator is IC1. This IC contains the same basic circuit as the 0-20V regulator, previously described (see schematic diagram of XP-660). Transistor Q102 is the pass transisitor that controls the output current. Transistor Q101 is used to increase the impedance of the pass transistor.

  • Page 5: Operation Instructions

    This circuit will limit the output current to less than 1 amp. When the short is removed, the output voltage will automatically reset to 5V. ® Models XP-660 and XP-760 are extremely All supplies are If the output is By tying the...

  • Page 6: Safety Precautions

    Maintenance and Calibration The Elenco ® Models XP-660 and XP-760 have been designed and manufactured to require no routine maintenance. The circuits are protected by design from external shorts or overloads. information is provided in the event the supply requires service or re-calibration.
  • Page 7 Parts List XP-660 Qty. Description Resistors 2 R105 .14Ω 5% 5W 2 R213, 313 .39Ω 5% 2W 2 R210, 310 68Ω 5% 1/4W 4 R208, 209, 308, 309 200Ω 5% 1/4W 2 R211, 311 270Ω 5% 1/4W 4 R202, 203, 302, 303 470Ω...
  • Page 8 Schematic Diagram XP-660...
  • Page 9 Schematic Diagram XP-760...
  • Page 10 Parts List XP-760 Qty. Description Resistors 2 R105 .14Ω 5% 5W 2 R213, 313 .39Ω 5% 2W 2 R210, 310 68Ω 5% 1/4W 2 R207, 307 100Ω 5% 7W 4 R208, 209, 308, 309 200Ω 5% 1/4W 2 R211, 311 270Ω...

  • Page 11: Warranty Policy

    WARRANTY POLICY All of our instruments have been tested and conform to our rigid requirements on performance and durability, they are guaranteed to be free of defects in workmanship, materials and construction for a period of 2 years. If this product should fail in normal use within the first 3 months from the date of purchase, Elenco ®...
  • Page 12 Elenco ® Electronics, Inc. 150 Carpenter Avenue Wheeling, IL 60090 (847) 541-3800 Fax: (847) 520-0085 Web site: www.elenco.com e-mail: elenco@elenco.com...

This manual is also suitable for:

Xp-760

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