{"id":81345,"date":"2024-10-05T10:00:45","date_gmt":"2024-10-05T08:00:45","guid":{"rendered":"https:\/\/botland.com.pl\/blog\/?p=81345"},"modified":"2026-04-08T10:48:28","modified_gmt":"2026-04-08T08:48:28","slug":"tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie","status":"publish","type":"post","link":"https:\/\/botland.com.pl\/blog\/tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie\/","title":{"rendered":"Wzmacniacz audio TDA7294 &#8211; przyk\u0142adowe obwody"},"content":{"rendered":"<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Czas czytania:<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">min.<\/span><\/span>\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"81345\" class=\"elementor elementor-81345\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-f1970f2 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"f1970f2\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-8106ddf\" data-id=\"8106ddf\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a0f1ef5 elementor-widget elementor-widget-text-editor\" data-id=\"a0f1ef5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nietrudno zauwa\u017cy\u0107, \u017ce w\u015br\u00f3d pasjonat\u00f3w sprz\u0119tu audio, liczne grono stanowi\u0105 tak\u017ce pasjonaci elektroniki, kt\u00f3rzy <strong>projektuj\u0105, naprawiaj\u0105 i buduj\u0105<\/strong> wzmacniacze, przedwzmacniacze, kolumny g\u0142o\u015bnikowe i wszystkie inne urz\u0105dzenia i podzespo\u0142y umo\u017cliwiaj\u0105ce granie i odtwarzanie muzyki. Cho\u0107 wzmacniacze audio oparte na komponentach dyskretnych w dalszym ci\u0105gu ciesz\u0105 si\u0119 nies\u0142abn\u0105c\u0105 popularno\u015bci\u0105, to nie mo\u017cna przej\u015b\u0107 oboj\u0119tnie obok wzmacniaczy audio, kt\u00f3re wykorzystuj\u0105 prostsze konstrukcyjne rozwi\u0105zanie w postaci monolitycznego uk\u0142adu scalonego, a jest nim <strong>TDA7294<\/strong> &#8211; przyjrzymy si\u0119 kilku konstrukcjom wzmacniaczy audio opartym na tym scalaku!<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-02ca711 elementor-widget elementor-widget-heading\" data-id=\"02ca711\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TDA7294 - charakterystyka og\u00f3lna uk\u0142adu<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<section class=\"elementor-section elementor-inner-section elementor-element elementor-element-abc9b99 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"abc9b99\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-95b26f1\" data-id=\"95b26f1\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-636895c elementor-widget elementor-widget-image\" data-id=\"636895c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat.jpg\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"22920_1_kwadrat\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTA2MzgsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmNvbS5wbFwvYmxvZ1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcLzIyOTIwXzFfa3dhZHJhdC5qcGcifQ%3D%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat-1024x1024.jpg\" class=\"attachment-large size-large wp-image-90638\" alt=\"\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat-1024x1024.jpg 1024w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat-300x300.jpg 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat-768x768.jpg 768w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/22920_1_kwadrat.jpg 1080w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">TDA7294 - wzmacniacz audio 100W.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f843a65 elementor-align-center elementor-widget elementor-widget-button\" data-id=\"f843a65\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/botland.com.pl\/odtwarzacze-mp3-wav-ogg-midi\/22920-tda7294-wzmacniacz-audio-100w-.html\" target=\"_blank\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">SPRAWD\u0179<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"elementor-column elementor-col-50 elementor-inner-column elementor-element elementor-element-1b643e8\" data-id=\"1b643e8\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-87e49a5 elementor-widget elementor-widget-text-editor\" data-id=\"87e49a5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><a href=\"https:\/\/botland.com.pl\/odtwarzacze-mp3-wav-ogg-midi\/22920-tda7294-wzmacniacz-audio-100w-.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">TDA7294<\/a> to bardzo innowacyjny uk\u0142ad scalony <strong>wzmacniacza audio du\u017cej mocy<\/strong> w technologii D-MOS, wprowadzony na rynek przez s\u0142ynn\u0105 europejsk\u0105 firm\u0119 SGS-THOMSON STMicroelectronics w latach 90. ubieg\u0142ego wieku. Dopracowana konstrukcja tego wzmacniacza, usuwa surowe, zimne i twarde harmoniczne znane z poprzednich generacji liniowych scalonych wzmacniaczy mocy oraz integracji grubowarstwowej i jest szeroko stosowany w aplikacjach HI-FI, takich jak kina domowe, aktywne nag\u0142o\u015bnienie itp. Konstrukcja tego chipa \u0142\u0105czy w sobie zalety bipolarnego obwodu przetwarzania sygna\u0142u i mocy <a href=\"https:\/\/botland.com.pl\/91-tranzystory-unipolarne-mosfet\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">MOSFET<\/a>. Uk\u0142ad charakteryzuje si\u0119 zwi\u0119kszon\u0105 odporno\u015bci\u0105 na wy\u017csze napi\u0119cia zasilania, niskim poziomem szum\u00f3w, niskimi zniekszta\u0142ceniami i du\u017ca wiernoscia odtwarzania d\u017awi\u0119ku. Uklad posiada takze funkcj\u0119 stand-by, zabezpieczenie przed zwarciem i przegrzaniem, dzi\u0119ki czemu jego dzia\u0142anie jest znacznie udoskonalone.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<div class=\"elementor-element elementor-element-2791ef1 elementor-widget elementor-widget-spacer\" data-id=\"2791ef1\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-91348cf elementor-widget elementor-widget-text-editor\" data-id=\"91348cf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>G\u0142\u00f3wne parametry tego wzmacniacza scalonego to:<\/p><ul style=\"font-size: 16px; background-color: #ffffff;\"><li style=\"font-size: 16px;\"><strong>VS<\/strong> (napi\u0119cie zasilania) \u00b110\uff5e\u00b140V (maksymalne napi\u0119cie bez sygna\u0142u \u00b150V);<\/li><li style=\"font-size: 16px;\"><strong>Io<\/strong> (szczytowy pr\u0105d wyj\u015bciowy) 10A;<\/li><li style=\"font-size: 16px;\"><strong>Po<\/strong> (ci\u0105g\u0142a moc wyj\u015bciowa RMS) 70 W przy VS=\u00b135 i Z=8 \u03a9; 70W przy \u00b127V i Z = 4\u03a9; 100W przy VS=\u00b138V i Z = 8\u03a9 oraz 100W przy VS=\u00b129V i Z = 4\u03a9.<\/li><\/ul><p>Obw\u00f3d stand-by i wyciszenia ca\u0142kowicie redukuje ha\u0142as powodowany przez w\u0142\u0105czanie i wy\u0142\u0105czanie zasilania oraz eliminuje przegrzanie obwodu zabezpieczaj\u0105cego g\u0142o\u015bnika, zabezpieczenie przed pr\u0105dem zwarciowym i inne funkcje, dzi\u0119ki kt\u00f3rym jego dzia\u0142anie jest doskona\u0142e. To urz\u0105dzenie nadaje si\u0119 do kina domowego i wzmacniaczy Hi-Fi.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-54ee9b6 elementor-widget elementor-widget-heading\" data-id=\"54ee9b6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TDA7294 - uk\u0142ad OCL<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3c6bb8d elementor-widget elementor-widget-text-editor\" data-id=\"3c6bb8d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Schemat obwodu wzmacniacza w <strong>uk\u0142adzie OCL<\/strong> pokazano na rysunku 1. Obw\u00f3d ten jest dwukana\u0142owym wzmacniaczem mocy 70 W z\u0142o\u017conym z dw\u00f3ch uk\u0142ad\u00f3w TDA7294. Obw\u00f3d zawiera kilkana\u015bcie element\u00f3w zewn\u0119trznych niezb\u0119dnych do prawid\u0142owego dzia\u0142ania. Gdy napi\u0119cie zasilania wynosi \u00b135 V, mo\u017cemy uzyska\u0107 ci\u0105g\u0142\u0105 moc wyj\u015bciow\u0105 70 W przy obci\u0105\u017ceniu 8 om\u00f3w. Jest to bardzo odpowiedni uk\u0142ad do nap\u0119dzania g\u0142o\u015bnik\u00f3w w pomieszczeniu o powierzchni do 30m2. Je\u017celi impedancja g\u0142o\u015bnika jest mniejsza ni\u017c 8 om\u00f3w, nale\u017cy odpowiednio zmniejszy\u0107 napi\u0119cie zasilania uk\u0142adu.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-596e0f9 elementor-widget elementor-widget-image\" data-id=\"596e0f9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/PPfDRQn1DB.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"PPfDRQn1DB\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTA2NDIsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmNvbS5wbFwvYmxvZ1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL1BQZkRSUW4xREIucG5nIn0%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"479\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/PPfDRQn1DB.png\" class=\"attachment-large size-large wp-image-90642\" alt=\"\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/PPfDRQn1DB.png 988w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/PPfDRQn1DB-300x179.png 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/PPfDRQn1DB-768x459.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Rys. 1 - schemat uk\u0142adu OCL opartego na TDA7294.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-769685c elementor-widget elementor-widget-heading\" data-id=\"769685c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TDA7294 - uk\u0142ad BTL<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-81a9649 elementor-widget elementor-widget-text-editor\" data-id=\"81a9649\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><strong>Uk\u0142ad BTL<\/strong> pokazano na rysunku 2. Wykorzystuje on dwa uk\u0142ady TDA7294 pracuj\u0105ce w topologii mostkowej. Moc wyj\u015bciowa takiego uk\u0142adu mo\u017ce osi\u0105gn\u0105\u0107 nawet ponad 150W. Jest to rozwi\u0105zanie \u015bwietnie nadaje si\u0119 do ma\u0142ych sal koncertowych. Aby zagra\u0107 stereo, potrzebne s\u0105 \u0142\u0105cznie cztery sztuki uk\u0142adu TDA7294. Gdy napi\u0119cie zasilania wynosi \u00b125 V, mo\u017cna uzyska\u0107 ci\u0105g\u0142\u0105 moc wyj\u015bciow\u0105 150 W przy obci\u0105\u017ceniu 8 om\u00f3w. Gdy napi\u0119cie zasilania wynosi \u00b135 V, mo\u017cna uzyska\u0107 ci\u0105g\u0142\u0105 moc wyj\u015bciow\u0105 180 W przy obci\u0105\u017ceniu 16 om\u00f3w. Gdy u\u017cywasz TDA7294 jako wzmacniacza mocy BTL, obci\u0105\u017cenie nie mo\u017ce by\u0107 mniejsze ni\u017c 8 om\u00f3w.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-37c821c elementor-widget elementor-widget-image\" data-id=\"37c821c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TmvEYdFdjs.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"TmvEYdFdjs\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTA2NDYsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmNvbS5wbFwvYmxvZ1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL1RtdkVZZEZkanMucG5nIn0%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"376\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TmvEYdFdjs.png\" class=\"attachment-large size-large wp-image-90646\" alt=\"\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TmvEYdFdjs.png 833w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TmvEYdFdjs-300x141.png 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TmvEYdFdjs-768x361.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Rys. 1 - schemat uk\u0142adu BTL opartego na 2x TDA7294.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-e89fcbf elementor-widget elementor-widget-heading\" data-id=\"e89fcbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TDA7294 - wzmacniacz sta\u0142opr\u0105dowy<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5e67063 elementor-widget elementor-widget-text-editor\" data-id=\"5e67063\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Ten obw\u00f3d wzmacniacza mocy na <a href=\"https:\/\/botland.com.pl\/odtwarzacze-mp3-wav-ogg-midi\/22920-tda7294-wzmacniacz-audio-100w-.html\" target=\"_blank\" rel=\"noopener\" data-wpel-link=\"internal\">TDA7294<\/a> r\u00f3\u017cni si\u0119 nieco od poprzednich dw\u00f3ch konstrukcji. Jego obw\u00f3d sprz\u0119\u017cenia zwrotnego obejmuje pr\u00f3bkowanie pr\u0105du, sumowanie napi\u0119cia i ujemne sprz\u0119\u017cenie zwrotne. W por\u00f3wnaniu z tradycyjnym wzmacniaczem mocy sta\u0142onapi\u0119ciowym, wzmacniacz sta\u0142opr\u0105dowy ma nast\u0119puj\u0105ce zalety:<\/p><ul><li>Pr\u0105d wyj\u015bciowy wzmacniacza mocy nie zale\u017cy od impedancji obci\u0105\u017cenia. Nawet je\u015bli obci\u0105\u017cenie zostanie zwarte, nie spowoduje to przegrzania wzmacniacza.<\/li><li>Moc wyj\u015bciowa wzrasta wraz ze wzrostem impedancji obci\u0105\u017cenia. Zwi\u0119kszenie obci\u0105\u017cenia g\u0142o\u015bnik\u00f3w w ramach okre\u015blonej rezerwy mocy mo\u017ce zapewni\u0107 si\u0142\u0119 bas\u00f3w i rozdzielczo\u015b\u0107 wysokich cz\u0119stotliwo\u015bci oryginalnego sygna\u0142u muzycznego.<\/li><li>Si\u0142a dzia\u0142aj\u0105ca na cewk\u0119 drgaj\u0105c\u0105 g\u0142o\u015bnika zale\u017cy wy\u0142\u0105cznie od pr\u0105du. Zastosowanie oscylacji sterowanych p\u0142ynem do promowania g\u0142o\u015bnika musi by\u0107 szybsze ni\u017c oscylacje sterowane napi\u0119ciem, aby mo\u017cna by\u0142o \u0142atwo dopasowa\u0107 impedancj\u0119 wej\u015bciow\u0105 i wyj\u015bciow\u0105 systemu wibracji g\u0142o\u015bnika.<\/li><li>Obw\u00f3d wzmacniacza mocy sta\u0142opr\u0105dowego jest w rzeczywisto\u015bci kontrolowanym \u017ar\u00f3d\u0142em pr\u0105du kontrolowanym przez napi\u0119cie sygna\u0142u wej\u015bciowego. Jego wewn\u0119trzny obw\u00f3d sprz\u0119\u017cenia zwrotnego realizuje pr\u00f3bkowanie pr\u0105du, sumowanie napi\u0119cia ujemnego sprz\u0119\u017cenia zwrotnego i charakteryzuje si\u0119 wysok\u0105 impedancj\u0105 wej\u015bciow\u0105 i wyj\u015bciow\u0105. Impedancja wej\u015bciowa jest wysoka, dok\u0142adnie taka, jakiej potrzebuje obw\u00f3d wzmacniacza o sta\u0142ym napi\u0119ciu poprzedniego stopnia, co jest korzystne dla przesy\u0142ania napi\u0119cia sygna\u0142u do wej\u015bcia wzmacniacza mocy bez strat. Wysoka impedancja wyj\u015bciowa mo\u017ce by\u0107 zmniejszona przez rezystancj\u0119 bocznika R5, co sprzyja dodaniu pr\u0105du sygna\u0142u wyj\u015bciowego do obci\u0105\u017cenia. Na rysunku 3 napi\u0119cie zasilania wybrano jako \u00b135V, a jego powi\u0119kszenie okre\u015bla si\u0119 na podstawie stosunku g\u0142o\u015bnika do R6.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-cbf414a elementor-widget elementor-widget-image\" data-id=\"cbf414a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/UpZtB5BbIY.png\" data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-title=\"UpZtB5BbIY\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTA2NTAsInVybCI6Imh0dHBzOlwvXC9ib3RsYW5kLmNvbS5wbFwvYmxvZ1wvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNFwvMDlcL1VwWnRCNUJiSVkucG5nIn0%3D\" data-wpel-link=\"internal\">\n\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"777\" height=\"523\" src=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/UpZtB5BbIY.png\" class=\"attachment-large size-large wp-image-90650\" alt=\"\" srcset=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/UpZtB5BbIY.png 777w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/UpZtB5BbIY-300x202.png 300w, https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/UpZtB5BbIY-768x517.png 768w\" sizes=\"(max-width: 777px) 100vw, 777px\" \/>\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Rys. 3 - wzmacniacz sta\u0142opr\u0105dowy na TDA7294.<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b36cd25 elementor-widget elementor-widget-heading\" data-id=\"b36cd25\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">TDA7294 - nie tylko do s\u0142uchania muzyki!<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-becc900 elementor-widget elementor-widget-text-editor\" data-id=\"becc900\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Prezentowane w niniejszym artykule przyk\u0142adowe obwody oparte na uk\u0142adzie TDA7294, zapewniaj\u0105 <strong>bardzo dobr\u0105 jako\u015b\u0107 d\u017awi\u0119ku<\/strong> czy to przy s\u0142uchaniu muzyki czy przy ogl\u0105daniu film\u00f3w. Jednak na tym zastosowania tego uk\u0142adu si\u0119 nie ko\u0144cz\u0105. Mo\u017cemy go tak\u017ce z powodzeniem wykorzysta\u0107 we wzmacniaczach przeznaczonych do nag\u0142a\u015bniania elektrycznych instrument\u00f3w muzycznych, np. gitar, syntezator\u00f3w i wielu innych. Uk\u0142ad mo\u017ce wsp\u00f3\u0142pracowa\u0107 z przedwzmacniaczami opartymi na p\u00f3\u0142przewodnikach jak i lampach elektronowych &#8211; to drugie rozwi\u0105zanie mo\u017cemy spotka\u0107 chocia\u017cby we wzmacniaczach gitarowych Marshall z serii Valvestate.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>TDA7294 to wszechstronny uk\u0142ad scalony wzmacniacza mocy audio o wysokiej jako\u015bci d\u017awi\u0119ku &#8211; poznaj przyk\u0142adowe konstrukcje na nim oparte na blogu Botland.<\/p>\n","protected":false},"author":21,"featured_media":90663,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[7,179],"tags":[],"class_list":["post-81345","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-elektronika","category-kompendium"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Wzmacniacz audio TDA7294 - przyk\u0142adowe obwody - Botland<\/title>\n<meta name=\"description\" content=\"TDA7294 to wszechstronny uk\u0142ad scalony wzmacniacza mocy audio o wysokiej jako\u015bci d\u017awi\u0119ku - poznaj przyk\u0142adowe konstrukcje na nim oparte na blogu Botland.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/botland.com.pl\/blog\/tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie\/\" \/>\n<meta property=\"og:locale\" content=\"pl_PL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Wzmacniacz audio TDA7294 - przyk\u0142adowe obwody - Botland\" \/>\n<meta property=\"og:description\" content=\"TDA7294 to wszechstronny uk\u0142ad scalony wzmacniacza mocy audio o wysokiej jako\u015bci d\u017awi\u0119ku - poznaj przyk\u0142adowe konstrukcje na nim oparte na blogu Botland.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/botland.com.pl\/blog\/tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie\/\" \/>\n<meta property=\"og:site_name\" content=\"Botland\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/facebook.com\/Botland\/\" \/>\n<meta property=\"article:published_time\" content=\"2024-10-05T08:00:45+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-04-08T08:48:28+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/botland.com.pl\/blog\/wp-content\/uploads\/2024\/09\/TDA7294-1024x512.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"512\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Mateusz Mr\u00f3z\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Napisane przez\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mateusz Mr\u00f3z\" \/>\n\t<meta name=\"twitter:label2\" content=\"Szacowany czas czytania\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 minut\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/botland.com.pl\\\/blog\\\/tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/botland.com.pl\\\/blog\\\/tda7294-co-to-jest-dane-techniczne-schemat-cena-i-opinie\\\/\"},\"author\":{\"name\":\"Mateusz Mr\u00f3z\",\"@id\":\"https:\\\/\\\/botland.com.pl\\\/blog\\\/#\\\/schema\\\/person\\\/774dbd37e308d5fb229ec7f3b8898559\"},\"headline\":\"Wzmacniacz audio TDA7294 &#8211; 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