IEC 60134:1961 pdf download,Rating systems for electronic tubes and valves and analogous semiconductor devices. IEC 60134:1961 defines and explains rating systems used for electronic tubes and valves and for analogous semiconductor devices. Its focus is not on a specific device model, but on how ratings are established, described, and interpreted so that engineers understand what […]
IEC 60134:1961 pdf download Read More »
IEC 60114:1959 pdf download,Recommendation for heat-treated aluminium alloy busbar material of the aluminium-magnesium-silicon type. IEC 60114:1959 is a technical IEC recommendation that specifies performance requirements for heat-treated aluminium alloy busbar material of the aluminium–magnesium–silicon (Al–Mg–Si) type. It defines key electrical and mechanical properties that busbar material should meet so that it is suitable and consistent
IEC 60114:1959 pdf download Read More »
ISO 22765:2025 pdf download,Nuclear fuel technology — Sintered (U,Pu)O2 pellets — Guidance for ceramographic preparation for microstructure examination. ISO 22765:2025 provides guidance for preparing ceramographic samples of sintered (U,Pu)O2 pellets so that the pellet microstructure can be examined both qualitatively and quantitatively. It focuses on the ceramographic procedure used during fuel fabrication, defining how to
ISO 22765:2025 pdf download Read More »
ISO 21181:2025 pdf download,Light conveyor belts — Determination of the relaxed elastic modulus. ISO 21181:2025 specifies a test method for determining the relaxed elastic modulus of light conveyor belts. Its purpose is to provide a standardized way to quantify how these belts deform under a defined loading and after the initial stress relaxation, so the
ISO 21181:2025 pdf download Read More »
ISO 14903:2025 pdf download,Refrigerating systems and heat pumps — Qualification of tightness of components and joints. ISO 14903:2025 specifies the qualification procedure used to obtain type approval for the tightness (leak tightness) of hermetically sealed and closed components, joints, and parts used in refrigerating systems and heat pumps. It sets out how manufacturers should demonstrate
ISO 14903:2025 pdf download Read More »