Lub tshuab hluav taws xob tsis muaj suab nrov yuav tsim nyog nyob ntawm qhov xav tau lub suab, lub tshuab xa hluav taws xob, thiab lub tshuab tso hluav taws xob dhau los. Xws li lub zog txuas tau yooj yim heev ua ke ntawm lub hauv paus ntawm kev sib txuas ntawm Circuit Court TDA7560.
Tsim nyog
microcircuit TDA7560, electrolytic capacitors 2200 uF × 50 V, 47 uF × 50 V, capacitors 0.1 uF - 7 daim, capacitor 0.47 uF, resistors 10 kOhm, 47 kOhm, Circuit Board board, soldering hlau, rosin, ham, txuas xov hlau, cua tshuab pa nrog thaj thaj 30 thaj tsam, 2 tus ntsia hlau thiab 2 lub txiv ntoo M3
Cov Lus Qhia
Kauj ruam 1
Cov cuab yeej ua ke no tau tsim los ua kom nrov nrov hauv tsheb. Nws yog tsim los rau cov kab hluav taws xob ntawm 13.2 Volts thiab tsim tawm hluav taws xob muaj 25 - 45 watts, nyob ntawm qhov load tsis kam (4 thiab 2 ohms, feem).
Tin cov conductive paths ntawm Circuit Court board kom huv si nrog rosin. Muag lub TDA7560 microcircuit rau lub rooj tsavxwm, tom qab ntawd yob ib qho ua rau ntawm cov ua haujlwm thaiv cov khoom thaiv C3-C6 rau cov leeg 11, 12, 15, 17. Qhov davhlau ya nyob twg thib ob ntawm cov capacitors yog cov nkag ntawm 4 qhov ntawm lub tso suab.
Kauj ruam 2
Capacitor C1 thiab C8 yog lub zog lim, solder lawv nyob rau hauv thaum uas tig mus nrog cov roj fais fab. Solder capacitors C9 thiab C10 mus rau tus lej 16 thiab 10, ua ntu zus. Thaum soldering electrolytic capacitors C8 thiab C10, xyuam xim rau lawv polarity. Lub davhlau ya nyob twg tsis zoo yog qhia ntawm rooj plaub lub capacitor nrog lub pluaj ntev, sab hauv uas cov paib raug rho tawm. Tom qab ntawd, cam qhov tam sim no-txwv tsis pub resistors R1 thiab R2 rau pins 4 thiab 22. Muag cov capacitors C1 thiab C2 (0.1mkF) rau tib pins ntawm microcircuit thiab "hlau" hlau.
Kauj ruam 3
Muag ib txoj kab hlau tsis muaj kab uas muaj kab hla ntawm tsawg kawg 4 square millimeters mus rau rab koob 1, 6, 13 thiab 20. Muag ib rab hlau dub rau tus lej 1 thiab 13, qhov no yog “rho tawm” tus pin fais fab. Txhawm rau pins 6 thiab 20 - ib qho xaim liab, qhov no yog "ntxiv" cov davhlau ya nyob twg ntawm lub zog xa khoom. Txuas lub xov tooj cua dawb ntawm lub resistor R1 rau lub davhlau ya nyob twg ntawm lub hwj chim hloov ntawm lub ntaus ntawv nrog uas koj yuav siv lub zog loj no. Txuas lub xov tooj cua dawb ntawm resistor R2 rau khawm Mute. Tom qab ntawd solder pins 2, 8, 18, 24 ntawm microcircuit rau hauv av hlau.
Kauj ruam 4
Pins 3 thiab 5, 7 thiab 9, 17 thiab 19, 21 thiab 23 yog cov pins tso zis ntawm lub zog txuas ntxiv. Thaum txuas lub tsheb cov tshuab hais lus, nco ntsoov xyuas qhov kev ncaj ncees ntawm kev rwb thaiv tsev ntawm cov xov hlau mus rau lawv. Yog tias ib qho ntawm cov xov hlau no luv luv rau hauv av hauv tsheb, microcircuit tuaj yeem swb. Thov lub suab teeb liab mus rau lub tswv yim ntawm lub zog txuas ntxiv (capacitors C3-C6) tsuas yog dhau ntawm cov hlau tsis muaj kab thaiv. Txuas cov xaim ntawm cov xaim no mus rau “rho tawm” ntawm lub hwj chim muab. Tom qab qhov kawg ntawm soldering, xyaum 2 lub qhov hauv qhov hluav taws xob raws cov zawj ntawm cov rooj plaub microcircuit thiab ntsia hlau rau cov hlau hlau ntawm qhov chaw microcircuit. Thov ib txheej nyias nyias ntawm cov tshav kub hloov hla nruab nrab ntawm cov chaw no.
