Microphone Amplifier Speaker Hearing Aid Diagram. So it gets dc current by a battery through resistor r1 10k. A smart hearing aid.

Hearing Aid Gain Which One Wayne Staab Phd Hearinghealthmatters Org Waynesworld
Hearing Aid Gain Which One Wayne Staab Phd Hearinghealthmatters Org Waynesworld from hearinghealthmatters.org

Condenser mic audio amplifier and loudspeaker. Audio amplifier circuit components required. A hearing aid circuit can be used for many purposes like listening fait sounds bird listening speech amplifier etc.

Which serves as a first audio.

The sound detection section employs a quad op amp ic lm324 ic1 a and a timer ne555 ic2. To make a hearing aid an audiologist or hearing aid dispenser will make an imprint of the patients ear by pouring silicon material into the ear. The figure below shows a very simple and easy to build hearing aid that can also be used for above describe purposes. It passes only ac to amplify into the base of transistor q1 bc547.