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IEC 60118-6:1984 ed1.0

Заменен
Hearing aids. Part 6: Characteristics of electrical input circuits for hearing aids — 9 стр.
Specifies the electrical, marking and safety characteristics of a circuit for an external electrical input to a personal hearing aid to ensure compatibility with external electrical or electroacoustic signal sources.
ICS
17.140.50 Electroacoustics. Including sound level meters / Электроакустика. Включая слуховые аппараты и шумомеры