《IEC-60393-1-2008.pdf》由会员分享，可在线阅读，更多相关《IEC-60393-1-2008.pdf（108页珍藏版）》请在三一文库上搜索。
1、 IEC 60393-1 Edition 3.0 2008-05 INTERNATIONAL STANDARD Potentiometers for use in electronic equipment Part 1: Generic specification IEC 60393-1:2008(E) Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008
2、04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, e
3、lectronic or mechanical, including photocopying and microfilm, without permission in writing from either IEC or IECs member National Committee in the country of the requester. If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication, plea
4、se contact the address below or your local IEC member National Committee for further information. IEC Central Office 3, rue de Varemb CH-1211 Geneva 20 Switzerland Email: inmailiec.ch Web: www.iec.ch About the IEC The International Electrotechnical Commission (IEC) is the leading global organization
5、 that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition, a corrigenda or an amendment mig
6、ht have been published. ? Catalogue of IEC publications: www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria (reference number, text, technical committee,). It also gives information on projects, withdrawn and replaced publications. ? IEC Just Published: www
7、.iec.ch/online_news/justpub Stay up to date on all new IEC publications. Just Published details twice a month all new publications released. Available on-line and also by email. ? Electropedia: www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing mo
8、re than 20 000 terms and definitions in English and French, with equivalent terms in additional languages. Also known as the International Electrotechnical Vocabulary online. ? Customer Service Centre: www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need furt
9、her assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo
10、reproduction or networking permitted without license from IHS -,-,- IEC 60393-1 Edition 3.0 2008-05 INTERNATIONAL STANDARD Potentiometers for use in electronic equipment Part 1: Generic specification INTERNATIONAL ELECTROTECHNICAL COMMISSION XD ICS 31.040.20 PRICE CODE ISBN 2-8318-9748-3 Copyright I
11、nternational Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 60393-1 IEC:2008(E) CONTENTS FOREWORD.6 1 General 8 1.1 Scope8 1.2 Normative re
12、ferences 8 2 Technical data10 2.1 Units and symbols.10 2.2 Terms and definitions10 2.3 Preferred values28 2.4 Marking .28 3 Assessment procedures .28 4 Test and measurement procedures.28 4.1 General.28 4.2 Standard atmospheric conditions.29 4.3 Drying .30 4.4 Visual examination and check of dimensio
13、ns.30 4.5 Continuity (except for continuously rotating potentiometers)32 4.6 Element resistance32 4.7 Terminal resistance.33 4.8 Maximum attenuation 33 4.9 Resistance law (conformity) 33 4.10 Matching of the resistance law (for ganged potentiometers only).34 4.11 Switch contact resistance (when appr
14、opriate)34 4.12 Voltage proof (insulated styles only)38 4.13 Insulation resistance (insulated styles only).39 4.14 Variation of resistance with temperature40 4.15 Rotational noise 42 4.16 Contact resistance at low-voltage levels44 4.17 Setting ability (adjustability) and setting stability45 4.18 Sta
15、rting torque 49 4.19 Switch torque 49 4.20 End stop torque.50 4.21 Locking torque.50 4.22 Thrust and pull on shaft.51 4.23 Shaft run-out .52 4.24 Lateral run-out.53 4.25 Pilot (or spigot) diameter run-out .53 4.26 Shaft end play.54 4.27 Backlash .55 4.28 Dither 57 4.29 Output smoothness .58 4.30 Rob
16、ustness of terminals59 4.31 Sealing60 4.32 Solderability 61 4.33 Resistance to soldering heat .61 4.34 Change of temperature62 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo reproductio
17、n or networking permitted without license from IHS -,-,- 60393-1 IEC:2008(E) 3 4.35 Vibration63 4.36 Bump 64 4.37 Shock64 4.38 Climatic sequence.65 4.39 Damp heat, steady state67 4.40 Mechanical endurance (potentiometers) 68 4.41 AC endurance testing of mains switches on capacitive loads.71 4.42 DC
18、endurance testing of switches .73 4.43 Electrical endurance74 4.44 Component solvent resistance.78 4.45 Solvent resistance of the marking78 4.46 Microlinearity.79 4.47 Mounting (for surface mount potentiometers).81 4.48 Shear (adhesion) test83 4.49 Substrate bending test (formerly bond strength of t
19、he end face plating).83 4.50 Solderability (for surface mount potentiometers)83 4.51 Resistance to soldering heat (for surface mount potentiometers).83 Annex A (normative) Rules for the preparation of detail specifications for capacitors and resistors for electronic equipment 84 Annex B (normative)
20、Interpretation of sampling plans and procedures as described in IEC 60410 for use within the IEC Quality Assessment System for Electronic Components .85 Annex C (normative) Measuring methods for rotational noise.86 Annex D (normative) Apparatus for measuring mechanical accuracy .89 Annex E (normativ
21、e) Measuring method for microlinearity90 Annex F (normative) Preferred dimensions of shaft ends, bushes and for the mounting hole, bush-mounted, shaft-operated electronic components92 Annex G (informative) Example of common potentiometers law 93 Annex H (normative) Quality assessment procedures 95 F
22、igure 1 Shaft-sealed potentiometer 14 Figure 2 Shaft- and panel-sealed potentiometer.14 Figure 3 Fully sealed potentiometer .14 Figure 4 Linear law 16 Figure 5 Logarithmic law16 Figure 6 Inverse logarithmic law.16 Figure 7 Output ratio17 Figure 8 Loading error .18 Figure 9 Total mechanical travel (o
23、r angle of rotation) .18 Figure 10 Conformity .20 Figure 11 Absolute conformity20 Figure 12 Linearity.21 Figure 13 Independent linearity22 Figure 14 Zero-based linearity .23 Figure 15 Absolute linearity .24 Copyright International Electrotechnical Commission Provided by IHS under license with IECLic
24、ensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 4 60393-1 IEC:2008(E) Figure 16 Terminal based linearity.25 Figure 17 Effective tap width25 Figure 18 Backlash 27 Figure 19 Example of insulation resistance and vo
25、ltage proof test jig for surface mount potentiometers .39 Figure 20 Test circuit contact resistance45 Figure 21 Measuring circuit for setting ability (as divider).46 Figure 22 Measuring circuit for setting ability (as current controller).47 Figure 23 Shaft run-out52 Figure 24 Lateral run-out .53 Fig
26、ure 25 Pilot (spigot) diameter run-out54 Figure 26 Shaft end play55 Figure 27 Test circuit for measurement of backlash .56 Figure 28 Measurement of backlash.57 Figure 29 Test circuit for measurement of output smoothness58 Figure 30 The circuit for continuous monitoring of the contact resistance.71 F
27、igure 31 Test circuit a.c. endurance testing72 Figure 32 Test circuit d.c. endurance testing73 Figure 33 Example of microlinearity measurement .79 Figure 34 Block diagram of a circuit for evaluation of microlinearity .80 Figure 35 Example of simultaneous evaluation of linearity and microlinearity.80
28、 Figure 36 Suitable substrate for mechanical and electrical tests (may not be suitable for impedance measurements)82 Figure 37 Suitable substrate for electrical tests82 Figure C.1 Measuring circuit for method A, rotational noise .87 Figure C.2 Measuring circuit for CRV.87 Figure C.3 Measuring circui
29、t for ENR.88 Figure E.1 Block diagram of a digital reference unit (synthetic high-precision master).90 Figure G.1 Definition of rotation (shaft-end view) .93 Figure G.2 Linear law, without centre tap.94 Figure G.3 Linear law, with centre tap94 Figure G.4 Logarithmic law, without tap .94 Figure G.5 L
30、ogarithmic law, with tap 94 Figure G.6 Inverse logarithmic law without tap.94 Figure G.7 Inverse logarithmic law with tap94 Figure H.1 General scheme for capability approval 98 Table 1 Standard atmospheric conditions.30 Table 2 Measuring voltages .32 Table 3 Calculation of resistance value(R) and ch
31、ange in resistance (R) .41 Table 4 Calculation of temperature differences (T).41 Table 5 Current values (IBb) 43 Table 6 Moving contact current 48 Table 7 End stop torque.50 Copyright International Electrotechnical Commission Provided by IHS under license with IECLicensee=Boeing Co/5910770001 Not fo
32、r Resale, 07/25/2008 04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 60393-1 IEC:2008(E) 5 Table 8 Locking torque 50 Table 9 Shaft torque 51 Table 10 Thrust and pull 51 Table 11 Thrust and pull 52 Table 12 Backlash .57 Table 13 Dither for non-wire wound types 57 Ta
33、ble 14 Dither for wire wound types (under consideration) .58 Table 15 Tensile force .59 Table 16 Number of cycles.66 Table 17 Number of cycles.69 Table 18 Number of operations73 Table 19 Panel size .75 Table G.1 Resistance law and code letter 93 Copyright International Electrotechnical Commission Pr
34、ovided by IHS under license with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 6 60393-1 IEC:2008(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ POTENTIOMETERS FOR USE IN ELECTRONIC EQUIPMENT Part 1: Gen
35、eric specification FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning sta
36、ndardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their prepara
37、tion is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely wi
38、th the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant sub
39、jects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technica
40、l content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent
41、possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any e
42、quipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees an
43、d IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) A
44、ttention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights
45、. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60393-1 has been prepared by IEC technical committee 40: Capacitors and resistors for electronic equipment. This third edition cancels and replaces the second edition published in 1989 and c
46、onstitutes a technical revision, including minor revisions related to tables, figures and references. This edition contains the following significant technical changes with respect to the previous edition: implementation of Annex H which replaces Section 3 of the previous edition. The text of this s
47、tandard is based on the following documents: FDIS Report on voting 40/1897/FDIS 40/1914/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. Copyright International Electrotechnical Commission Provided by IHS under li
48、cense with IECLicensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 04:58:02 MDTNo reproduction or networking permitted without license from IHS -,-,- 60393-1 IEC:2008(E) 7 This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all the parts of the IEC 60393 series, under the gene