Kordhiyo Headphone la gacmihiinna oo aad 15 daqiiqo

laga bilaabo enthusiast kasta wireless ka dib markii ay tijaabo ugu horeysay guul, dareen macaan ee guul uu, waxa uu doonayaa in ay isku dayaan in ay sameeyaan wax hadda. Ma toy ah, laakiin dhab ahaantii ku shaqaynaya oo wax ka buuxa. Si arrintan loo sameeyo, dhammaataan ku habboon fudud oo macmal ah kordhiyo headphone, taas oo gacmaha u yiqiin la soo ururay oo kartaa oo kaliya dhowr daqiiqo.

Halkee ayaan ka codsan karaa? First, ee ay ujeedada looga danleeyahay, kuwaas oo, si ay u xoojin signal ka midab ama preamplifier, in uu yahay meesha ay signal audio waa mid aad u liita, oo ay tahay wax aan macquul aheyn in ay ku xidhmaan headphones. Xaaladdan oo kale, waxaad samayn kartaa kordhiyo headphone oo aad gacmihiinna ku ah.

Marka labaad, waxaa waxtar leh sida qalab dheeraad ah. kordhiyo headphone qaadan karo waa wax lagu dabaqi karo wareeggeedii imtixaanka. Maxaa yeelay, marar badan waxaa loo baahan yahay in ay helaan meel ay ku jebin circuitry cusub in aad soo ururiyay, laakiin iyadu ma doonayaan in ay ka shaqeeyaan. Tusaale ahaan, waxaad samaysay kordhiyo ka headphone isla gacmahaaga. Waxa uu kaa caawin doona in search for sababaha gardarrada. waxaa la, aad si dhakhso ah ka heli kartaa barta at taas oo calaamad u baaba'aa. Waxaa inta badan ay taasi dhacdo, sababtoo ah Qoomaan: qayb ka xun soldered, capacitor khaldan, iwm Arag ama la ahaatid sababta noqon kartaa wax adag in la helo.

Samee kordhiyo headphone oo aad gacmihiinna ku xaq, maxaa yeelay, circuit Mono ka kooban yahay qaybaha shan oo kaliya. Waxay ku salaysan tahay TDA7050 chip, taas oo kharash 30-80 rubles. Laakiin waxaan qabaa in la haystaa ay aad qaybaha electronic, taas oo had iyo jeer waa ka wax kasta oo xamaasad la heli karo haddii ay taasi, waxaa ka jira chip noocan oo kale ah. Waxaa inta badan loo isticmaalaa in ciyaartoyda cajalad iyo aaladaha kale ee dhawaaqa tarmo fudud.

On chip isku loo sameyn karo iyo kordhiyo headphone rikoodh ah oo aad gacmihiinna. Waxaa yeelan doonaan in ay ku dar laba capacitor horjeeda on saarka ah (waxay noqon kartaa mid caadi ah), iyo talooyin ah gacanta mugga waxaa lagu sameyn karaa ka dual resistor variable.

chip ubadatay waa kordhiyo xoog guryaha size heer (DIP8). danab-shaqaynta ee 1.6 ilaa 6 volts. Waxa gubtay, tamar badan. awoodda wax soo saarka ku xiran tahay danab sahayda. In rikoodh muuqashadii hoos load of 32 ohms iyo danab saddex volts on saarka aad u hesho ku saabsan 130 milliwatts per channel. Marka xiran wareegi buundada ee muuqashadii awoodda Mono la labanlaab. circuit Output waxaa ka difaacan circuit gaaban.

Jaantuska Schematic siiyey in Jaantuska 1. signal la gelin ayaa waxaa laga codsadaa in boosteejada 1 iyo 3 iyo headphones 32 ohms ku xiran yihiin boosteejada 7 iyo 8. Sida laga soo xigtay caddaymaha ah in hab ka gudbi, load waa in aanay noqon wax ka yar 32 ohms. Si la simi sahayda danab ku xiran yihiin in ay C1 capacitors baska iyo C2, 100, iyo 0.1 microfarads ah, siday u kala horreeyaan. Resistor R1 - 22 ohms. Well, laga yaabee, iyo sharaxaad dhan of model hore.

nidaamka labaad ee Jaantuska 3 waxaa badanaa loo isticmaalaa in prefabrication qalab yar oo cabbirkooda. Si aad uga dhigto wax yar ka dhib badan. nidaamka wuxuu muujinayaa dhammaan faahfaahinta loo baahan yahay. Jaantuska 2 - nidaamka la mid ah in ay ku xidhmaan hadla. Sida aad arki karto, farqiga u yar yahay. circuit ee ku hadla ee capacitors horjeeda waxaa loo isticmaalaa in channel saarka kasta, iyo headphone - taagan capacitor caadi barta xiriir si wareeg ah iyaga oo hoy.