Normativa ISO UNE gratis

Fecha de publicación: 01/01/1977 Askarels for transformers and capacitors. Part 3: Specifications for new askarels IEC 60588-3:1977

Fecha de publicación: 01/01/1977 High fidelity audio equipment and systems: Minimum performance requirements. Part 1: General IEC 60581-1:1977

Fecha de publicación: 01/01/1977 Definitions and terminology of brush-holders for electrical machines IEC 60560:1977

Fecha de publicación: 01/01/1977 Amendment 1 – Methods for measuring the performance of electric warming plates for household and similar purposes IEC 60496:1975/AMD1:1977

Fecha de publicación: 01/01/1977 Fourth supplement – Dimensions of electronic tubes and valves IEC 60067D:1977

Fecha de publicación: 01/01/1978 Inductive voltage dividers IEC 60618:1978

Fecha de publicación: 01/01/1978 Analogue signals for process control systems. Part 2: Direct voltage signals IEC 60381-2:1978

Fecha de publicación: 01/01/1978 Rigid precision coaxial and their associated precision connectors. Part 4: 21 mm rigid precision coaxial line and associated hermaphroditic precision coaxial connector – Characteristic impedance 50 ohms (Type 9/21) – Characteristic impedance 75 ohms (Type 6/21) IEC 60457-4:1978

Fecha de publicación: 01/01/1978 Radio-frequency connectors. Part 9: R.F. coaxial connectors with inner diameter of outer conductor 3 mm (0.12 in) with screw coupling – Characteristic impedance 50 ohms (Type SMC) IEC 60169-9:1978

Fecha de publicación: 01/01/1978 Inductive voltage dividers IEC 60618:1978+AMD1:1981 CSV