IEC 60317-19 pdf download
IEC 60317-19 pdf download Specifications for particular types of winding wires – Part 19: Solderable polyurethane enamelled round copper wire, overcoated with polyamide, class 130 1Scope This International Standard specifies the requirements of solderable enamelled round copperwinding wire of class 130 with a dual coating.The underlying coating is based on polyurethane resin, which may be modified providing it retains the...
IEC 60317-21 pdf download
IEC 60317-21 pdf download Specifications for particular types of winding wires – Part 21 : Solderable polyurethane enamelled round copper wire overcoated with polyamide, class 1 55 1 Scope This International Standard specifies the requirements of solderable enamelled round copperwinding wire of class 155 with a dual coating. The underlying coating is based onpolyurethane resin，which may be modified providing it...
IEC 60317-54 pdf download
IEC 60317-54 pdf download Specifications for particular types of winding wires – Part 54: Polyester enamelled round copper wire, class 1 55L 1Scope This part of lEC 60317 specifies the requirements of enamelled round copper winding wire ofclass 155L with a sole coating based on polyester resin，which may be modified providing itretains the chemical identity of the original resin and...
IEC 60352-5 pdf download
IEC 60352-5 pdf download Solderless connections – Part 5: Press-in connections – General requirements, test methods and practical guidance 1scope and object This part of IEC 60352 is applicable to solderless press-in connections for use in tele-communication equipment and in electronic devices employing similar techniques. The press-in connection consists of a termination having a suitable press-in zone which isinserted into...
IEC 60368-4 pdf download
IEC 60368-4 pdf download Piezoelectric filters of assessed quality – Part 4: Sectional specification – Capability approval 1 General 1.1Scope This part of lEC 60368 applies to piezoelectric filters as custom-built products or as standardcatalogue items whose quality is assessed on the basis of capability approval. lt prescribes the preferred ratings and characteristics, with appropriate tests and measuringmethods contained in...
IEC 60371-1 pdf download
IEC 60371-1 pdf download Specification for insulating materials based on mica – Part 1: Definitions and general requirements 1Scope This part of lEC 60371 gives definitions of terms used to describe built-up mica materials,products based on them and mica paper. It also deals with general requirements andconditions of supply. 2Normative references The following referenced documents are indispensable for the application...
IEC 60375 pdf download
IEC 60375 pdf download Conventions concerning electric and magnetic circuits 1 Scope This International Standard lays down rules for signs and reference directions and referencepolarities for electric currents and voltages in electric networks，as well as for thecorresponding quantities in magnetic circuits. ln Clauses 3 to 9,the time dependence is arbitrary. Clause 10 details the rules and recom-mendations for complex notation....
IEC 60393-6 pdf download
IEC 60393-6 pdf download Potentiometers for use in electronic equipment – Part 6: Sectional specification: Surface mount preset potentiometers 1.4Information to be given in a Detail Specification Detail Specifications shall be derived from the relevant Blank Detail Specification. Detail Specifications shall not specify requirements inferior to those of the generic,sectionalor Blank Detail Specification. When more severe requirements are included, they...
IEC 60444-8 pdf download
IEC 60444-8 pdf download Measurement of quartz crystal unit parameters – Part 8: Test fixture for surface mounted quartz crystal units 1 scope This part of lEC 60444 explains the test fixture that allows the accurate measurement ofresonance frequency， resonance resistance,and equivalent electrical circuit parameters of aleadless surface mounted quartz crystal units using zero phase technique as specified in lEC60444-4...
IEC 60461 pdf download
IEC 60461 pdf download Time and control code for video tape recorders 1 Scope This International Standard specifies a digital time and control code for use in television, film,and accompanying audio systems operating at 30, 25,and 24 frames per second. Clauses 4,5, and 6 specify the manner in which time is represented in frame-based systems.Clause 7 describes the structure of...