TDA7294: tīwerawera ara iahiko. Bridge TDA7294 tīwerawera iahiko

I-kongakonga TDA7294 tīwerawera ara iahiko ko te tino ohie, ka waiho reira taea ki te faahiti noa i te tangata e kore he tino kaha i roto i te hikohiko,. Ulf e kia pai hoki te whakamahi i roto i te pūnaha kaikōrero mo koutou kāinga PC, TV, pikitia tenei maramara. Ko tōna painga ko e kore e rapua e te reira kita pai, me te whakarerekētanga, rite kei te take ki amplifiers transistor. Na te aha ki te mea e pā ana ki te rerekē o whakaaro rama - āhuatanga nui iti.

Aita e titauhia ia nui-ngaohiko supply mana ki te iahiko pitoake. O te akoranga, i reira he whakawera, rite i roto i te waihanga rama. Na reira, ki te whakamahere koe ki te whakamahi i te tīwerawera mo te wa roa, he reira pai ki te tāuta i te tua ki te totohu wera konumohe he hoki i te iti rawa i te tahi iti mō te ventilation takoha. Te kore ia i runga i ka mahi i te tīwerawera taiawhio moroiti-TDA7294, engari kei te pea te haere i te reira i roto i te tiaki pāmahana.

He aha TDA7294?

Ko te tino rongonui hoki neke atu i te 20 tau tēnei maramara. Kua riro te reira i te whakawhirinaki o amateurs irirangi, i te mea he amplifiers mahi nui rawa i runga i taua mea ohie, tukurua hanga taea tetahi, ara he hobbyist tauhou. Tīwerawera kongakonga TDA7294 (hoatu kaupapa e i roto i te tuhinga) e taea e rua reo, me te tīwharawhara. Ko te hanganga ā-o te maramara ngā o transistors mara-pānga. tīwerawera Ororongo hanga ki runga ki tenei maramara, no ki te piha AB.

Huapai maramara

Ko te painga o te whakamahi i maramara mō amplifiers ororongo:

1. mana putanga Tino nui. Mō 70 Watts ina kua he ātete o 4 ohms te kawenga. I roto i tenei take, pā reira te mania mua o te maramara.

2. Mō 120 W i 8 ohms (i roto i te ara iahiko piriti).

3. He taumata tino iti o te papamuri haruru, distortions ore, takoto iarere reproducible i roto i te whānuitanga mohio a tino e te taringa tangata - i te 20 Hz ki te 20 kHz.

Ka taea te hua 4. maramara Power i te ngaohiko DC o 10-40 V. Ko reira te mea he ngoikoretanga iti - me te whakamahi koe i te supply rua.

Ko reira utu tokanga ki āhuatanga kotahi - e kore he distortion ōwehenga neke atu i te 1%. I te moroiti-iahiko TDA7294 mana tīwerawera ko na ohie e ara he ohorere rite taea reira ki a koe te tiki i te tangi-te kounga tiketike.

taumahi Pin o te maramara

Na inaianei i roto i atu taipitopito e pā ana ki te mea e wātea ana mō te TDA7294 te kitenga. Ko te waewae tuatahi - he "tohu whenua" te hono ki te waea noa o te whakaminenga. Conclusions "2" me "3" - Kōaro me ngā kōkuhunga noninverting aua. "4" he putanga rite "whenua tohu" hono ki whenua. E kore te rima o te waewae i roto i te tīwerawera auau tangi whakamahia. "6" waewae - he-tāpiri nāianei, kua hono pūnga -hiko ki reira. "7" me "8" whakatau - Mataora tāuru tāpiri me te tango mana te whakaatu i. whakamahia aratau tūtatari te i roto i te kōwae mana - waewae "9".

Waihoki, "10" waewae - Kei te whakamahia hoki aratau muting i te hanga o te wae mana o te tīwerawera. "11" me te "12" terminals kore e whakamahia i roto i te hoahoa o amplifiers ororongo. C "14" tangohia putanga tohu te atu, ka whangai ki te pūnaha tukuoro. "13" me te "15" titi e - he "+" me "-" ki hono te atamira mana putanga. I-kongakonga iahiko TDA7294 tīwerawera Wuwhaiti he kahore rerekē i te hunga e whakaarohia ana i roto i te tuhinga, kua tāpiri reira ki anake te tātari haere iti, hono nei te ki te tāuru.

āhuatanga moroiti

he tika ki te whakarongo ki te āhuatanga kotahi, no te hoahoa tīwerawera audio - haunga te kai, me e nga waewae "15" me te "8" e electrically tūhono ki te tinana kongakonga. Na reira ko te reira e tika ana ki te tutakina te reira i te whakamahana, i roto i tetahi take ka whakamahia i roto i te tīwerawera. Hoki tenei whakaaro ko reira tika ki te whakamahi i te spacers waiariki motuhake. Ki te whakamahi koe i te tīwerawera TDA7294 piriti haaati, whakarongo ki te ahua o te tinana. pea te reira i momo poutū whakapae ranei. Ko te tino noa ko te whakatinanatanga, tuku ki rite TDA7294V.

mahi paruru- IC TDA7294

Ko te maramara whakarato maha ngā momo o te tiaki, i ngā, i te ngaohiko pārōnaki. Ki te he huringa ngaohiko ohorere, na ka haere te maramara ki te aratau tiaki, na reira, e kore e waiho hei kino hiko. Ko te atamira putanga hoki he tiaki ki overloads me iahiko poto. Ki te tahu i te whare e ki te pāmahana o 145 nekehanga, ngū te reo te. Ki runga ki te taenga 150 nekehanga i reira he he whakawhiti ki te aratau tūtatari. tiaki whakatau katoa TDA7294 maramara ki hiko.

mana tīwerawera

Simple, wātea ki te katoa, me te tino nui - cheap. Just he torutoru haora ka taea e koe te hanga i te tīwerawera audio rawa pai. A ki te nuinga o te wā noho koutou ki runga ki taua mea kawe i te waikawa o te poari. Kei te hanganga o anake te mana tīwerawera me te mana waeine, me te 2 takere te Ulf. Whakamātauria rite iti rite taea o waea whakamahia i roto i te hoahoa tīwerawera. Piri ki tūtohutanga ohie:

1. whakaritenga whakahauanga - nga waea hononga o te supply mana ki te poari amp ororongo ia.

2. Herea te ahu i roto i te pukupuku. Ki tenei paku ka utu mo te mara autō hanga e te nāianei hiko. Ki te mahi i tenei, me tango e koe katoa waea supply toru - "whānui", "haunga te" me "me", me te mānukanuka iti ki te whatua e ratou ki te whiri.

3. I roto i kore take e kore e whakamahi i roto i te hanga o te pera-ka karanga "koropiko whenua." Ko te take tenei ka he waea noa honotanga wae hanganga katoa, katia i roto i te koropiko. he tika ki te tuku raupapa, timata mai i te tāuru waea whenua mana rōrahi, atu ki te poari amp oro, me me haere mai ki te mutunga i te terminals putanga. He mea nui ki te te hono i te ara iahiko tāuru whakamahi waea paruruhia i roto i te noho taratahi.

mana aratau tūtatari kōwae me te wahangu

Tenei maramara he aratau tūtatari, me te wahangu. Hei kawe i te mahi e tika ana ki te whakahaere mā te whakamahi i "9" whakatau me "10". puta te whakahohe, ki te i enei maramara waewae i reira he kahore mānukanuka, he reira volts iti iho i te kotahi me te hawhe ranei. Hei whakahohe, me tono koe mo te ngaohiko waewae kongakonga, te uara o e nui 3.5V ki te whakahaere i te papa tīwerawera puta wā kotahi, i te mea nui hoki te kaupapa e hāngai ana i runga i te momo o te piriti, haere ana ki te wae mana kotahi mo wāhanga katoa.

A, no te tahuri te te kaha i runga i, kua whakatupato pūnga iahiko katoa i te supply mana. Ko te kōwae mana hoki kotahi pūnga piki tiaki. A, no te piki i te tiaki taea mōrahi haere atu tūtatari. He rua o pūnga whakamahia e te i roto i te wae mana, he kawenga hoki te aratau wahangu. Kei te ka tohutohutia ia he iti muri, na tahuri te aratau muhumuhu atu i te tuarua.