This item has closed with no items sold
View the relisted Item
View the relisted Item
View other items offered by szulou1662
Similar products
3pcs DIY High Fidelity Deaf Hearing Aids Audio Amplifier Kit Digital Amplifier Board Module
New
R372.00
Closed
11 May 24 00:04
Shipping
Standard courier shipping from R30
R30 Standard shipping using one of our trusted couriers applies to most areas in South Africa. Some areas may attract a R30 surcharge. This will be calculated at checkout if applicable.
Check my rate
Check my rate
Ready to ship in
The seller has indicated that they will usually have this item
ready to ship within 15 business days. Shipping time depends on your delivery address. The most
accurate delivery time will be calculated at checkout, but in
general, the following shipping times apply:
Standard Delivery
| Main centres: | 1-3 business days |
| Regional areas: | 3-4 business days |
| Remote areas: | 3-5 business days |
Returns
Get it now, pay later
Seller
Buyer Protection
Product details
Condition
New
Location
International
Bob Shop ID
612368864
Description: ? Hearing aids are a kind of sound enhancement products to help deaf people or elderly people; students can also use them as reading aids to amplify their voices when reciting texts in English, which helps to concentrate.
Now our store is introducing a set of hearing aids made of discrete components, which is suitable for students majoring in electronics to study, research and school teaching and training.
Although the circuit is simple, but due to the addition of a negative feedback circuit, and the selection of a high-sensitivity electret microphone, making the sound loud and bright, high fidelity, can be heard within 10 meters.
As long as the correct welding according to the diagram, connected to the 3V button battery, plug in headphones (mono or dual channel headphones can be), the switch to the on position, you can normally use.
PCB board size: 3.1 x 4.6 CM PCB sheet: FR-4 A-grade fiberglass panel Working voltage: 3V ? Package Included:
3 x?DIY High Fidelity Deaf Hearing Aids Audio Amplifier Kit
Now our store is introducing a set of hearing aids made of discrete components, which is suitable for students majoring in electronics to study, research and school teaching and training.
Although the circuit is simple, but due to the addition of a negative feedback circuit, and the selection of a high-sensitivity electret microphone, making the sound loud and bright, high fidelity, can be heard within 10 meters.
As long as the correct welding according to the diagram, connected to the 3V button battery, plug in headphones (mono or dual channel headphones can be), the switch to the on position, you can normally use.
PCB board size: 3.1 x 4.6 CM PCB sheet: FR-4 A-grade fiberglass panel Working voltage: 3V ? Package Included:
3 x?DIY High Fidelity Deaf Hearing Aids Audio Amplifier Kit