{"product_id":"10pcs-diy-high-fidelity-deaf-hearing-aids-audio-amplifier-kit-digital-amplifier-board-module","title":"10pcs DIY High Fidelity Deaf Hearing Aids Audio Amplifier Kit Digital Amplifier Board Module","description":"\u003cdiv style=\"font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; widows: 1;\"\u003e\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003eDescription:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style=\"font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; widows: 1;\"\u003e \u003c\/div\u003e\u003cdiv style=\"font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; widows: 1;\"\u003e\n\u003cspan style=\"font-size: 14px;\"\u003eHearing 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.\u003cbr\u003eNow 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.\u003cbr\u003eAlthough 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.\u003cbr\u003eAs 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.\u003c\/span\u003e\u003cbr\u003e\u003cdiv\u003e\u003cspan style=\"font-size: 14px;\"\u003ePCB board size: 3.1 x 4.6 CM\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px;\"\u003ePCB sheet: FR-4 A-grade fiberglass panel\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-size: 14px;\"\u003eWorking voltage: 3V\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; widows: 1;\"\u003e \u003c\/div\u003e\u003cdiv style=\"font-variant-numeric: normal; font-variant-east-asian: normal; line-height: normal; widows: 1;\"\u003e\n\u003cspan style=\"font-size: 16px;\"\u003e\u003cstrong\u003ePackage Included:\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size: 14px;\"\u003e10 x DIY High Fidelity Deaf Hearing Aids Audio Amplifier Kit\u003c\/span\u003e\n\u003c\/div\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/82\/D9\/e97aa5aa-1f2c-4aae-b152-e5475d1f9a49.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/DC\/0D\/e80ce2a5-597e-42c1-9bf0-6951b1f26985.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/20\/1F\/7ceb481c-e535-489c-af5e-4b27b5d56bfc.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/D3\/24\/e6b466e5-3503-4b33-916f-92e96e731e52.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/9B\/3E\/66d328e9-ec7c-4df8-ad7b-722831c9ec8a.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/A6\/2A\/4f326538-8fe4-4c7e-9ede-085dba03fc65.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/3B\/4F\/a77af2c5-8f29-4ce1-be24-e219e4bbcaf1.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/4B\/9B\/e4cd78d9-abe8-45e7-b2d3-29bdef306258.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/E1\/33\/7acc2899-ecef-4ef3-959b-a261962718f1.JPG\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/28\/24\/d93004a0-fa2b-415e-99b8-9fccf7b0e1a4.JPG\"\u003e","brand":"Shopify","offers":[{"title":"Title","offer_id":32129100775514,"sku":"1383156","price":750.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/e861444f-dfe6-4471-b84c-2b09e493a478_0f5bd725-0f9a-4ab3-9f3c-060658427605.jpg?v=1587138809","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/10pcs-diy-high-fidelity-deaf-hearing-aids-audio-amplifier-kit-digital-amplifier-board-module","provider":"Electronic Pro ","version":"1.0","type":"link"}