Elektrotechnické inženýrství

This part of IEC 62047 defines the test conditions and test methods for the performance of MEMS capacitive microphone.

The standard applies to MEMS capacitive microphone

This part of IEC 60747 specifies product specific standards for terminology, letter symbols, essential ratings and characteristics (properties), measuring and test methods, requirements for type tests, routine tests, endurance tests and marking for the following discrete semiconductor devices:

reverse blocking triode thyristors;

reverse conducting (triode) thyristors;

bidirectional triode thyristors (triacs);

turn-off thyristors.

If no ambiguity is likely to occur, any of the above will be referred to as thyristors.

This part of IEC 62024 specifies test methods for AC losses of high-frequency inductive components for power supplies used in DC-to-DC converters and similar devices at currents close to actual operation and introduces the measurement principle, scope of application and matters to be noted for each method. This document is applicable to leaded and surface mount inductors with dimensions according to IEC 62024-2

This part of IEC 61076 describes circular connectors M8 screw-locking or with nominal 8 mm snap-locking, for connection of automation devices with signal and power up to 50 V AC / 60 V DC rated voltage and up to 4 A rated current.

These connectors consist of fixed and free connectors either rewirable or non-rewirable. Male connectors have round contacts Æ 0,48 mm, Æ 0,6 mm, Æ 0,7 mm and Æ 1,0 mm according to the number of ways and coding, all contacts with the same size.

The different codings prevent the mating of differently coded male and female connectors.

NOTE 1 M8 is the dimension of the thread of the screw locking mechanism of these circular connectors.

NOTE 2 These connectors are typically used for connecting industrial automation devices for process measurement and control

This part of IEC 61156 describes cables for work area wiring intended to be used for transmission of 10 Mb/s over a single twisted pair in channels for distances of up to 1 km. The transmission characteristics of these cables are specified up to a frequency of 20 MHz and at a temperature of 20 °C. Depending on the MICE environment and the installation conditions, either unscreened or screened cables can be used. Furthermore, to consider different maximum transmission lengths, two sets of requirements are specified. The cable type A-1000W does not have attenuation de-rating compared to the A-1000 type according to IEC 61156-13 and is a design supporting up to 1 km channel length. The cable type A-400W has attenuation de-rating compared to the A-400 type according to IEC 61156-13. A blank detail specification can be found in Annex A.

The cables covered by this document are intended to operate with voltages and currents normally encountered in communication systems. While these cables are not intended to be used in conjunction with low impedance sources, for example the electric power supplies of public utility mains, they are intended to be used to support the delivery of DC low voltage remote powering applications.