Bench Test Amplifier: 6 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:30

Cov lus qhia no qhia ntxaws txog kev tsim kho lub rooj zaum ua kom nrov nrov, tsim nyog rau kev ntsuas lub suab hluav taws xob. Nws suav nrog cov ntawv ntsuas txhawm rau txuas lub amp mus rau qhov ntsuas hluav taws xob, roj teeb, tswj lub ntim, hloov lub zog, thiab tus hais lus. Qhov no nthuav tawm kev sim nrog lub suab, vim tias lub suab nrov tsis xav tau tsim rau txhua qhov teeb tsa.

Kauj Ruam 1: Cov Ntaub Ntawv thiab Cov Cuab Yeej

Txoj haujlwm no tau tsim nrog LM4861, 1.1W, BTL tus hais lus lub suab nrov. Nws ua haujlwm los ntawm cov roj teeb ncaj qha.

Cov ntaub ntawv C1, C2 - 470nF (0.47uF) ceramic capacitor, 25V C3 - 4.7uF tantalum capacitor, 10V R1 - 4.7k, 1/4 W resistor R2 - 180 ohm, 1/4W resistor R3 - 25k potentiometer SW1 - SPST (lossis SPDT) hloov D1 - Liab LED BT1 - tus tuav lub roj teeb, AA lossis AAA, 3 hlwb U1 - LM4861, 1.1W apmplifier, 8 -PDIP LS1 - 8 ohm hais lus MISC FR4 tooj liab clad PCB board, plated tsawg kawg ib sab hauv qab ib nrab ntawm altoids tin clips ua rau 1 "standoffs, sab hauv 4-40 xov, 4 daim 1/4" 4-40 screws, 4 daim 1/4 "2-56 screws, 2 daim 2-56 txiv ntoo, 2 daim hlau TOOLS nyiam rab riam phom siv lub tshuab tsom iav/teeb pom kev zoo laum xovxwm 3/64 ", 1/8" tshuab khoom siv 1.75 "lub qhov pom cov hlau txuas, cov hlau txuas cov hlau txiav cov hlau strippers kub yaj phom thiab cov nplaum

Kauj ruam 2: Circuit Schematic

Qhov no yog ze rau cov txheej txheem thov txheej txheem rau LM4861, hloov pauv feem ntau vim muaj cov khoom siv muaj.

Kauj Ruam 3: Pawg Txheej Txheem thiab Kev Npaj

Muab cov khoom sib dhos tso rau ntawm lub rooj tsav xwm kom zoo. Paub tias koj yuav cim rau hauv qab ntawm PCB. Hauv daim duab hauv qab no koj tuaj yeem pom cov cim tsaus muag los ntawm tus cwj mem npas.

Nco ntsoov tias vim tias qhov no yog seem, muaj cov qhov uas twb muaj lawm. Kuv siv ib qho rau lub hwj chim, tab sis xyaum lwm tus raws li xav tau. Qhov hloov pauv thiab LED yuav tsum muaj qhov drilled kom haum lawv qhov loj. Qhov #4 kev sawv ntawm plaub fab ntawm lub rooj tsavxwm siv 1/8 qhov kuv siv lub qhov pom rau tus hais lus, hloov tau qhov sib txawv ntawm qhov me me tuaj yeem siv tau

Kauj Ruam 4: Txiav Cov Txheej Txheem (thaj av)

Kuv siv rab riam uas xav tau tiag tiag los txiav qhov chaw xav tau, muab cov hluav taws xob sib cais los ntawm qhov uas txhawm rau txhawm rau IC thiab cov khoom tsis sib haum.

Nco ntsoov tias pins 1 thiab 7 ntawm LM4861 txuas nrog hauv av. Lawv tsis muaj cov ntaub qhwv txiav, cov tooj liab uas seem ntawm lub rooj tsavxwm ua av. Qhov no muab qhov ua tau zoo tshaj plaws. Txiav cov ntaub qhwv raws li hauv qab no: # Ua kom ntseeg tau tias txiav tawm ntawm koj tus kheej! Ua kom tau qhab nia tag nrho cov kab rov tav, tuav lub rooj tsavxwm hauv txoj haujlwm yooj yim. Tig lub Rooj Tswjhwm Saib 90 degrees raws lub moos, thiab maj mam ntsuas cov kab ntsug. Tig 90 degrees clockwise dua, thiab txiav me ntsis. Rov ua qhov no rau ob peb qhov kev hloov pauv, thiab koj yuav pom tias muaj qhov tob txog 0.02 dav (1mm). Siv lub iav tsom iav lossis lub pob zeb jewler kom paub tseeb tias txhua lub ncoo raug cais. txhuam nrog Dawn thiab yas txhuam daim txhuam cev. Cov txhuam ntawm cov txhuam txhuam pab tshem tawm cov khoom ntawm tooj liab tooj liab, thiab cov xab npum ntxuav cov roj tawm ntawm lub rooj tsavxwm, pab nrog kev muag khoom.

Kauj ruam 5: Sib dhos

Txuas qhov hloov, LED, lub roj teeb rau lub rooj tsavxwm

Siv cov kua nplaum kub, txuas tus hais lus rau lub rooj tsavxwm. Solder 6 hlau leades mus rau tus hais lus. Xov hauv qab los ntawm lub pob khawm qhov ntawm lub qhov taub tsis zoo. Siv cov kua nplaum kub los kaw lub tin rau PCB. Ib zaug ntxiv, ib qho khoom siv txuas nrog cov neeg muag khoom hauv av ncaj qha mus rau tooj liab uas seem.

Kauj ruam 6: Ua tiav

Thaum ua tiav, hauv qab ntawm amp yuav tsum saib zoo li qhov no.

Ntxiv cov standoffs yog tias koj xav tau