Cov Cuab Yeej Ntsuas: Qhov Yooj Yim Yooj Yim 555 Tester. Kho thiab Hloov Kho: 3 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:31

Ntawm no kuv yuav muab cov kab hluav taws xob me me uas yuav ntsuas seb lub 555 lub sijhawm uas koj nyuam qhuav sim hauv lwm lub Circuit Court (thiab nws sov li lossis tsis ua haujlwm hlo li) ua haujlwm lossis tsis yog.

Koj puas tau xav tsis thoob tias nws yog koj li Circuit Court, lossis seb puas yuav tau kib koj 555? Zoo ntawm no yog ib txoj hauv kev los ntsuas me ntsis nti sai thiab yooj yim.

Kauj Ruam 1: Sib Sau Cov Khoom

Qhov thiab ceev faj.

Nyob ntawm koj qhov kev hnov lus lossis qhov koj pom zoo tshaj plaws kom deb npaum li lub suab tsim los ntawm cov zis, koj yuav tsum tau txheeb xyuas seb cov tshuaj tiv thaiv thiab lub tshuab hluav taws xob uas koj xav siv rau ntu ntu ntawm Circuit Court. Qhov no yog Astable multivibrator Circuit. Thaum qhov hloov pauv raug kaw, qhov tso tawm yog ib puag ncig nthwv dej ntawm qhov txiav txim siab los ntawm C1, R1 thiab R2. Qhov xav tau los laij lej txhawm rau nrhiav cov txiaj ntsig muaj raws li hauv qab no: f = 1.44 / (R1 + 2R2) X C1 Lub sijhawm (sijhawm - t) ntawm kev sib txuas tau pom nrog: t = 1 / f = 0.69 (R1 + 2R2) X C1 Lub sijhawm siab thiab qis ntawm txhua qhov mem tes tuaj yeem suav nrog: Lub sijhawm siab = 0.69 (R1 + R2) X C1 Lub sijhawm qis = 0.69 (R2 X C1) Nco ntsoov tias nws yog qhov ua tau los khaws qhov tseem ceeb ntawm R2 ntawm 1K thiab 1M. Txhawm rau ua lub luag haujlwm nyob ib puag ncig 50%, siv R1 = 1K. Yog li, thaum koj muaj zaus koj xav tsim, thiab tau xam tawm tias R2 thiab C1 yuav yog dab tsi, thiab koj tau sau cov khoom ntawd _{tsuas yog yam koj xav tau tseem yog} Ib lub PC board Ib tus 8 tus pin IC lub qhov ib 555 lub sij hawm Ib 47_uaF capacitor (C1) Ib 10 F ceramic capacitor Ib 10k rau 100k Potentiometer qee qhov xaim hlau txuas (lossis pawg thawj coj) thiab koj lub tsom iav.

Kauj Ruam 2: Muab Txhua Qhov Ua Ke

Raws li kuv tau hais, nws yog ncaj ncaj rau pem hauv ntej. Yog tias koj tau txais ib qho ntawm PC cov laug cam tau ua los tso lub qhov (socket) nyob rau hauv kab ntawv nruab nrab ntawm pawg thawj coj saib, thiab muaj cov kab uas mus los ntawm qhov pib taw tes taw tes sab nraud thiab kiv cua tawm me ntsis kom yooj yim soldering.

Cov kab laug sab hauv cov ntu thiab cov xov hlau los txuas rau ntau qhov chaw raws li qhia hauv kab lus. Nco ntsoov siv tus lej tooj liab 2 rau tus pin 6. Siv lub tshuab ua kom lub cav sib cais, C3 (tsis pom) ntawm Lub Hwj Chim hauv thiab hauv av yog tias koj tsis siv lub roj teeb. Yog tias koj xav siv qhov kev xaiv hloov kho zaus, ntxiv nws ua ntu nrog R1. Lub hwj chim mus rau tus pin 4 (5-15 v DC). R2 yog kev sib txuas los ntawm tus pin 6 rau tus pin 7. Txij li thaum peb yuav tsis siv tus pin 5, kev tswj hluav taws xob, peb yuav tsum txiav nws mus rau hauv av nrog 10 F Capactor (C2:-). Txheej txheem cej luam ntawm 555. Pin 1 = av Pin 2 = txhais Pin 3 = tso tawm Pin 4 = pib dua Pin 5 = tswj qhov hluav taws xob Pin 6 = pib Pin 7 = tso tawm Pin 8 = 3-15 vdc

Kauj Ruam 3: Solder Nws, Tom qab ntawd Box

Thaum koj muaj tag nrho cov seem soldered, thiab tau sim qhov Circuit Court. Koj tuaj yeem ntxiv Pot. inline piv txwv li hauv kab nrog, R1 lossis R2 (Kuv siv R1 yog li kuv tuaj yeem hloov kho lub luag haujlwm raws li kuv xav tau). Nrhiav lub thawv uas tsim nyog muab tso rau hauv thiab nco ntsoov tso cai rau qhov chaw nkag mus rau lub qhov (socket) yog li koj tuaj yeem siv qhov no ua tus ntsuas. Qhov nkag mus rau lub sijhawm tau hloov pauv thiab ua rau muaj ntau yam zoo dua. Kuv siv daim npav kub xim xim aluminium qub dawb thiab txiav lub qhov tom qab ntsuas nws rau qhov chaw. Txaus siab rau.