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07:10 Apr 25, 2008
English to Bulgarian translations [PRO] Tech/Engineering - Other / hearing system
теле-бобина (T-coil) за (долавяне на) магнитен сигнал и прехвърлянето/преобразуването му в звуков
Explanation: It's nothing more than a tiny coil of wire around a core that will induce an electric current in the coil when it's in the presence of a changing magnetic field.
A telecoil, can therefore, be an alternate or supplemental input device for a hearing aid.
Normally, a hearing aid "listens" with its microphone, then amplifies what it "hears". But with a telecoil used as the input source instead of (or in addition to) the microphone, the hearing aid can "hear" a magnetic signal which represents sound.
T-coils are comprised of a metal core (or rod) around which ultra-fine wire is coiled. T-coils are also called induction coils because when the coil is placed in an electromagnetic (EM) field, an alternating electrical current is induced in the wire (Ross, 2002b; Ross, 2004). The T-coil detects EM energy and transduces (or converts) it to electrical energy. T-coils can also be used to pick up magnetic signals, just as a microphone picks up an acoustic signal; the T-coil then sends the signal to the hearing aid circuit or processor for amplification.