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Tektronix CPS250 manual

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Table of contents for the manual

  • Page 1

    User Manual CPS250 T riple Output Power Supply 070-6740-03[...]

  • Page 2

    Copyright  T ektronix, Inc. 1987. All rights reserved. T ektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes that in all previously published material. Specifications and price change privileges reserved. Printed in the U.S.A. T ektronix, Inc., P .O. Box 1000, W ilsonville, OR[...]

  • Page 3

    W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of one (1) year from the date of shipment. If any such product proves defective during this warranty period, T ektronix, at its option, either will repair the defective product without charge for parts and labor , or will provide a re[...]

  • Page 4

    [...]

  • Page 5

    CPS250 User Manual i T able of Contents General Safety Summary iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . Getting Started 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preparing the Power Supply for Use 2 . . . . . . . . . . . . . . . . . . . . . Front Panel 4 . . . . . . . . . . . . . . . . . . . . . [...]

  • Page 6

    T able of Contents ii CPS250 User Manual List of Figures Figure 1: Line V oltage Selectors, Power Input, and Fuse Locations 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 2: Front Panel 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 3: Independent Floating Application 8 . . . . . . . . . .[...]

  • Page 7

    CPS250 User Manual iii General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Only qualified personnel should perform service pr ocedur es. Injury Precautions Use Proper Power Cord T o avoid fire hazard, use only the power cord specified for this product. A [...]

  • Page 8

    General Safety Summary iv CPS250 User Manual Do Not Operate in Wet/Damp Conditions T o avoid electric shock, do not operate this product in wet or damp conditions. Do Not Operate in Explosive Atmosphere T o avoid injury or fire hazard, do not operate this product in an explosive atmosphere. Product Damage Precautions Use Proper Power Source Do not [...]

  • Page 9

    General Safety Summary CPS250 User Manual v Safety T erms and Symbols T erms in This Manual These terms may appear in this manual: W ARNING. W arning statements identify conditions or practices that could r esult in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could r esult in damage to this pr oduct or [...]

  • Page 10

    General Safety Summary vi CPS250 User Manual Certifications and Compliances CSA Certified Power Cords CSA Certification includes the products and power cords appropriate for use in the North America power network. All other power cords supplied are approved for the country of use.[...]

  • Page 11

    CPS250 User Manual 1 Getting Started The T ektronix CPS250 Triple Output Power Supply is a multifunc- tion bench or portable instrument. The fixed 5 volt output is available for use in transistor-transistor -logic (TTL) applications. T wo 0 V to 20 volt, 500 mA, variable outputs meet the needs of most semiconductor test or experimental applications[...]

  • Page 12

    Getting Started 2 CPS250 User Manual Preparing the Power Supply for Use Check the following items prior to operating the CPS250 T riple Output Power Supply for the first time (see Figure 1 for locations of items 1 through 3): 1 2 3 Figure 1: Line V oltage Selectors, Power Input, and Fuse Locations CAUTION. T o pr event damage to the instrument, set[...]

  • Page 13

    Getting Started CPS250 User Manual 3 2. Check that the correct line fuse is installed. The line fuse provides protection if the equipment malfunctions or an overload occurs. Refer to Appendix C: Replaceable Parts on page 23 for fuse part numbers. W ARNING. T o pr event electrical shock, connect the power cor d to a pr operly gr ounded power sour ce[...]

  • Page 14

    Getting Started 4 CPS250 User Manual Front Panel Figure 2 shows the front-panel controls, connectors, and indicators with brief descriptions of the items following the figure. 34 5 46 7 8 9 10 11 12 13 14 15 1 2 Figure 2: Front Panel 1. POWER Button. Push top of switch to the ON position to turn power supply on. Push bottom of switch to the OFF pos[...]

  • Page 15

    Getting Started CPS250 User Manual 5 6. Milliampere Current Meter . This meter indicates the current level of A or B output, depending on the position of the A/B meter switch. The meter may be mechanically set for zero with the slotted mechanical zero adjust disk below the center of the meter . 7. A/B Output Switch. Switches A and B outputs from IN[...]

  • Page 16

    Getting Started 6 CPS250 User Manual[...]

  • Page 17

    CPS250 User Manual 7 Reference This section of the manual includes examples of how to use the CPS250 T riple Output Power Supply . The number of possible applications is extensive, so only a few examples are given. CAUTION. Heat buildup may occur on the r ear-panel heat sink during operation. T o pr event equipment damage, ensur e that the power su[...]

  • Page 18

    Reference 8 CPS250 User Manual T o configure the power supply for independent floating, do the following: 1. W ith the CPS250 T riple Output Power Supply on and the outputs disconnected from loads, set the A and B VOL T AGE controls to the values needed (read on the V meter). Set the A and B CURRENT controls to midrange. 2. T urn POWER to OFF , and[...]

  • Page 19

    Reference CPS250 User Manual 9 CAUTION. T o pr event electric shock, do not elevate any power supply output terminals with any external voltage sour ce or power supply . T able 1: Independent Ground-Referenced V oltage Combinations 5-V olt Supply A-Supply B-Supply +5 V , fixed 0 to +20 V 0 to +20 V +5 V , fixed 0 to +20 V 0 to –20 V +5 V , fixed [...]

  • Page 20

    Reference 10 CPS250 User Manual Load 1 –5 V 2 A Load 2 –5 to +15 V Zero to 0.5 A Load 3 –5 to +15 V Zero to 0.5 A Figure 4: Independent Ground-Referenced Applications (A) Figure 5 shows the power supply connected to produce separate outputs of +5 V , 0 V to +20 V from the B supply , and 0 V to –20 V from the A supply . In this configuration[...]

  • Page 21

    Reference CPS250 User Manual 11 2. Set the A and B VOL T AGE controls to MIN and the A and B CURRENT controls to midrange. 3. T urn POWER to ON , and set the desired A and B voltages. 4. T urn POWER to OFF , and connect the load(s). 5. T urn POWER to ON , and readjust voltages if necessary . Figure 6 shows the power supply connected in series to pr[...]

  • Page 22

    Reference 12 CPS250 User Manual 5. T urn POWER to ON , and readjust voltages if necessary . Zero to –40 V and fixed +5 V outputs are shown in Figure 7. Follow the procedures outlined above to operate this configuration. Load 1 +5 V Load 2 Zero to –40 V Figure 7: Connections to Provide Fixed +5 V and 0 to –40 V Figure 8 shows the configuration[...]

  • Page 23

    Reference CPS250 User Manual 13 Figure 9 shows the connections for three ground referenced, positive supplies. Load 1 +5 V Load 2 Zero to +20 V Load 3 Zero to +20 V Figure 9: Independent Ground-Referenced Applications (positive output) T racking Mode Applications Series T racking When the A/B OUTPUTS selector is set to SERIES TRACKING, the –outpu[...]

  • Page 24

    Reference 14 CPS250 User Manual Load 1 Zero to +40 V Load 1 Zero to –40 V Internal connection Internal connection Figure 10: Series-T racking Applications Parallel T racking When the A/B OUTPUTS selector is set to P ARALLEL TRACK- ING, the + outputs of the A and B variable supplies are connected and the – outputs of the A and B variable supplie[...]

  • Page 25

    Reference CPS250 User Manual 15 Load 1 Zero to +20 V 1.0 A Load 1 Zero to –20 V 1.0 A Internal connections Internal connections Figure 1 1: Parallel-T racking Applications[...]

  • Page 26

    Reference 16 CPS250 User Manual[...]

  • Page 27

    CPS250 User Manual 17 Appendix A: Specifications The following tables list the physical, environmental, operational, and electrical characteristics of the CPS250 T riple Output Power Supply: T able 2: Certifications and Compliances EC Declaration of Conformity – EMC Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility . Complian[...]

  • Page 28

    Appendix A: Specifications 18 CPS250 User Manual T able 4: Environmental Characteristics Storage T emperature –10 _ C to 60 _ C, 80% RH Operating T emperature 10 _ C to 40 _ C, 75% RH T able 5: Operational Characteristics Outputs 0 to 20 VDC (two), 5 VDC V oltage (5 V) 5.0 ± 0.1 VDC at 2.0 A maximum V oltage (0–20 V) 0–20 VDC at 0.5 A maximu[...]

  • Page 29

    CPS250 User Manual 19 Appendix B: Maintenance This appendix provides information for the basic maintenance of the CPS250 T riple Output Power Supply . Cleaning T o clean the power supply , use a soft cloth dampened in a solution of mild detergent and water . Do not spray cleaner directly onto the instrument, since it may leak into the cabinet and c[...]

  • Page 30

    Appendix B: Maintenance 20 CPS250 User Manual T roubleshooting Electronic maintenance on the CPS250 T riple Output Power Supply must be performed by a trained technician. However , an operator can perform some basic and routine maintenance. The power supply will give some indications of problems to aid the operator . Power Switch is On but Power-On[...]

  • Page 31

    Appendix B: Maintenance CPS250 User Manual 21 POWER Light ON, but No Output from A or B Supplies with Power Supply connected to Circuit 1. Disconnect the CPS250 outputs from the circuit being tested. Check A and B V OL T AGE and CURRENT controls. 2. If the outputs are good, check the circuit under test for a short or low resistance. POWER Light ON,[...]

  • Page 32

    Appendix B: Maintenance 22 CPS250 User Manual[...]

  • Page 33

    CPS250 User Manual 23 Appendix C: Replaceable Parts Replaceable parts may be ordered directly from your authorized T ektronix dealer . Standard Accessories The following items are shipped with the CPS250 T riple Output Power Supply: T able 7: Standard Accessories Accessory T ektronix Part Number Fuse, 3AG, 2A, 250V , SB (90 – 132 V Operation) 159[...]

  • Page 34

    Appendix C: Replaceable Parts 24 CPS250 User Manual The following power cords are available. T able 9: Accessory Power Cords Plug Configuration Normal Usage T ektronix Part Number North America 1 15 V 161-0104-00 Europe 230 V 161-0104-06 United Kingdom 230 V 161-0104-07 Australia 230 V 161-0104-05 North America 230 V 161-0104-08 Switzerland 230 V 1[...]