Hearing Aids

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QUESTER
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Hearing Aids

Post by QUESTER » Tue Apr 23, 2002 6:37 pm

Does anyone know how or where to get parts for a digital hearing instrument? There are only 4 parts in there: speaker, mike, cmos, and volume control, but I can't get a line on where to get any of them.

russlk
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Re: Hearing Aids

Post by russlk » Tue Apr 23, 2002 8:02 pm

Why digital? you can use 4000 series CMOS logic gate as a linear op amp, it operates on 3 volts and uses next to nothing for current. Radio Shack sells all the components, mike, speaker/earphone, volume control & 4001 IC.

QUESTER
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Re: Hearing Aids

Post by QUESTER » Thu Apr 25, 2002 5:42 pm

I neglected to mention that these hearing aid components must fit in the ear and they run on 1.4 volts.
I have one of those Radio Shack amplifers and they realy do a good job of amplifing, but you have to ware it and those earphones.

Gary
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Re: Hearing Aids

Post by Gary » Sun May 05, 2002 8:27 pm

Saw an ad in Family Handyman I think it was, for a mail-order hearing aid from a no-name company. $19.95 and it fit inside the ear. Looked like it might be worth the risk even if the company isn't legit.<p>Am having high frequency hearing loss myself. Difficulty hearing high tones, some birds, small bells, consonants etc.

motwnbro
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Re: Hearing Aids

Post by motwnbro » Tue May 28, 2002 10:23 am

as 2 the radio shak hearing amplifier, i found that they picked up the noise of the russeling on the shirt it was clipped 2. so what i did was remove the mics from thecircuit board installed an input jack . i use a computer mic/headphones instead. piont the mic straight out 2 hear what is in front of u or bend back 2u 2 hear yourself sing as u drive down the high way of life

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