Section 8 of IEC 6031 delineates the use of an acoustic coupler for loading an earphone or hearing aid with a predetermined acoustic impedance, which is essential for assessing the device’s physical performance characteristics. This coupler is effective across the frequency range of 125 Hz to 8 kHz. It is designed for use with air-conduction

This section of IEC 60317 lays out the specifications for enamelled rectangular copper winding wire, specifically designed for Class 240, with a single layer of aromatic polyimide resin. The range of nominal conductor dimensions covered by this standard is: Width: minimum 2.0 mm, maximum 16.0 mm; Thickness: minimum 0.80 mm, maximum 5.60 mm. Wires classified

This section of IEC 60317 outlines the requirements for tape-wrapped rectangular copper winding wire classified as Class 240. The insulation consists of one or two layers of aromatic polyimide tape. Class 240 is a thermal classification that mandates a temperature index of 240 and a heat shock temperature of no less than 260°C. NOTE: In

This section of IEC 60317 specifies the requirements for tape-wrapped round copper winding wire, classified as Class 240. The insulation consists of one or two layers of aromatic polyimide tape. Class 240 is a thermal class that demands a temperature index of at least 240°C and a heat shock temperature of at least 260°C. NOTE:

This section of IEC 60317 outlines the specifications for enamelled round copper winding wire classified as Class 1 80, which features a dual coating system. The primary coating is made from polyesterimide resin, which can be modified as long as it maintains the chemical identity of the original resin and complies with all the specified

This section of IEC 60317 details the specifications for solderable, enamel-coated round copper winding wire, which falls under Class 1 80 and features a dual-coating system. The base coating is composed of polyester-imide resin, which can be altered as long as it retains the chemical composition of the original resin and satisfies all the stipulated

This section of IEC 60317 outlines the requirements for glass-fiber-reinforced, resin- or varnish-impregnated, bare or coated rectangular copper winding wire with a temperature index of 180°C. NOTE: For this category of wire, the heat shock test is deemed unsuitable, and as a result, a heat shock temperature cannot be determined. Therefore, a classification based on

This part of IEC 60317 specifies the requirements for solderable enamelled round copper winding wire of Class 1 55, with a sole coating based on polyurethane resin that can be modified as long as it maintains the chemical identity of the original resin and meets all specified wire requirements. NOTE: A modified resin is a