Adjustable 555 Timer Relay Hloov - Monostable Multivibrator Circuit: 7 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27

Kawm paub yuav ua li cas thiaj tuaj yeem kho lub sijhawm nrog qhov hloov pauv qeeb ntawm 1 - 100 vib nas this uas siv 555 IC. Lub 555 timer tau teeb tsa ua Monostable Multivibrator. Cov zis tso tawm yog tsav los ntawm kev hloov pauv uas yog nyob rau hauv kev tswj los ntawm lub sijhawm sib tw.

Txij li qhov haujlwm tsuas yog koom nrog kev sib dhos yooj yim los ntawm kev ua raws cov txheej txheem, nws tsuas yog siv sijhawm ib teev los ua.

Tsis txhob hnov qab Sau Npe rau ntau qhov haujlwm: YouTube

Kauj ruam 1: Qhov & Cov Cuab Yeej

Cov Khoom Siv Hluav Taws Xob:

• 1x555 Kev
• 2x 3KΩ Resistor AliExpress
• 4x 10KΩ Resistor AliExpress
• 1x 1MΩ Potentiometer AliExpress
• 1x IN4004 Diode AliExpress
• 2x Tactile Momentary Laub Khawm AliExpress
• 2x 5mm LED AliExpress
• 2x 100uF Capacitor AliExpress
• 2x 0.1uF (100nF) Capacitor AliExpress
• 1x2 Pin Ntsia Hlau Terminal AliExpress
• 1x 3 Pin Ntsia Hlau Terminal AliExpress
• 1x 12VDC Relay AliExpress
• 1 x 12VDC Adapter AliExpress
• 1x SPDT Swb Hloov AliExpress
• 1x PCB Cov

Cov Cuab Yeej:

• Soldering Hlau AliExpress
• Soldering Hlau AliExpress
• Mini PCB Tes Laum + Khoom AliExpress
• Hlau Cutter AliExpress
• Hlau Stripper AliExpress
• Kev Muag Khoom Pab Tes Tes AliExpress

Koj tseem tuaj yeem yuav PCB: PCBWay

Kauj Ruam 2: 555 Piav

555 yog lub cuab yeej ruaj khov heev rau kev tsim lub sijhawm ncua lossis ua kom nrawm. Lub davhlau ya nyob twg ntxiv tau muab rau kev ua lossis rov pib dua yog tias xav tau. Hauv lub sijhawm ncua sijhawm ntawm kev ua haujlwm, lub sijhawm tau tswj hwm los ntawm ib tus tiv thaiv sab nraud thiab lub tshuab hluav taws xob. Lub Circuit Court tuaj yeem tshwm sim thiab rov pib dua ntawm cov nthwv dej poob, thiab cov hluav taws xob tso tawm tuaj yeem ua rau lossis poob mus txog 200mA lossis tsav TTL Circuit Court.

Hauv Monostable hom, LM555 lub sijhawm ua haujlwm ua lub tshuab hluav taws xob txhaj tshuaj ib zaug. Cov mem tes ua thaum lub LM555 lub sijhawm tau txais lub teeb liab ntawm qhov ntsuas tawm uas poob qis dua li 1/3 ntawm qhov hluav taws xob. Qhov dav ntawm cov zis mem tes tau txiav txim siab los ntawm lub sijhawm tas li ntawm RC network. Cov mem tes tso tawm xaus thaum qhov hluav taws xob ntawm lub capacitor sib npaug 2/3 ntawm qhov muab hluav taws xob. Qhov dav mem tes dav tuaj yeem txuas ntxiv lossis luv dua nyob ntawm daim ntawv thov los ntawm kev kho R thiab C qhov tseem ceeb.

Lub tshuab hluav taws xob sab nraud tau pib tawm los ntawm lub transistor sab hauv lub sijhawm. Raws li daim ntawv thov ntawm qhov tsis zoo ua rau lub plawv dhia tsawg dua 1/3 VCC rau tus pin 2, sab hauv flip-flop tau teeb tsa uas ob qho tso tawm luv luv hla lub capacitor thiab ua rau cov zis siab. Qhov hluav taws xob hla tus capacitor tom qab ntawd nce zuj zus rau lub sijhawm t = 1.1RC, thaum kawg qhov hluav taws xob sib npaug 2/3 VCC. Tus neeg sib piv sab hauv rov pib dua lub flip-flop uas tig tawm lub capacitor thiab tsav cov zis rau nws lub xeev qis.

Kauj Ruam 3: Circuit Schematic

LM555 muaj qhov ntsuas hluav taws xob siab tshaj plaws ntawm 16V thaum lub zog txuas lub tshuab hluav taws xob txuas ntawm 12V. Vim li no 12V lub zog siv hluav taws xob tau siv los txo tus naj npawb ntawm cov khoom siv xws li cov ntsuas hluav taws xob tawm. Thaum tus pin 2 ntawm LM555 tau tshwm sim (los ntawm luv nws mus rau hauv av) los ntawm kev hloov pauv tam sim S1, lub sijhawm pib tau pib.

Lub sijhawm ua haujlwm tso tawm cov mem tes nrog lub sijhawm ON lub sijhawm txiav txim los ntawm RC network piv txwv li t = 1.1RC. Hauv qhov no, tus nqi ruaj khov ntawm lub capacitor yog 100uF. Tus nqi ntawm R suav nrog 10KΩ resistor hauv koob nrog 1MΩ potentiometer. Peb tuaj yeem hloov pauv lub hwj chim kom hloov pauv lub sij hawm ntawm cov zis mem tes.

Piv txwv li, yog hais tias tus potentiometer tau teeb tsa rau 0Ω, tus nqi R yog sib npaug rau 10KΩ. Li no t = 1.1 x 10K x 100u = 1 thib ob.

Tab sis yog tias lub lauj kaub tau teeb tsa rau 1MΩ, tus nqi R yog sib npaug rau 1MΩ + 10KΩ = 1010KΩ. Li no t = 1.1 x 1010K x 100u = 100 vib nas this.

Thaum tus pin 4 ntawm LM555 tau tshwm sim (los ntawm luv nws mus rau hauv av) los ntawm qhov hloov pauv tam sim S2, lub sijhawm tau rov pib dua.

Thaum lub timer pib, lub relay tig ON. Vim li no qhov sib xws (COM) davhlau ya nyob twg ntawm kev xa xov yog luv rau qhov Qhib Qhib (TSIS) Lub zog muaj zog tuaj yeem txuas nrog lub davhlau ya nyob twg xws li lub teeb lossis lub twj tso kua dej. Lub transistor Q1 ua raws li kev hloov pauv kom ntseeg tau tias lub zog tsav tam sim no tau muab rau kev xa tawm. Diode D1 ua raws li flyback diode uas tiv thaiv transistor Q1 los ntawm qhov ntsuas hluav taws xob tshwm sim los ntawm kev xa xov txuas.

LED2 tig los txhawm rau qhia tias thaum twg lub relay tau qhib. LED1 qhia tias lub Circuit Court tau qhib. SPDT hloov S3 yog siv los hloov lub Circuit Court ON. Capacitors C2 thiab C4 tau siv los lim lub suab nrov hauv kab khoom.

Dav dawb hau Schematic: GitHub

Kauj Ruam 4: PCB Tsim

Lub sijhawm kwv yees: 30 feeb

• Kev txiav txim PCB: PCBWay
• Eagle PCB Board Layout: GitHub
• Luam tawm PDF: GitHub

Kuv tsim lub rooj tsavxwm uas siv Txoj Kev Hlau.

Kuv drilled plaub qhov sib dhos hauv txhua lub ces kaum nrog txoj kab uas hla ntawm 3mm.

PCB loj yog 10cm X 5cm.

Kauj Ruam 5: Circuit Court Assembly

Lub sijhawm kwv yees: 30 feeb

Muab thiab ua kom tag nrho cov khoom siv rau PCB. Muab ob npaug rau xyuas cov khoom nrog polarities. Thaum kawg, muab lub tshuab fais fab txuas rau PCB.

Thaum txhua qhov khoom siv sib txuas rau ntawm PCB, koj tuaj yeem txuas qhov thauj khoom hla cov chaw xa khoom.

Kauj Ruam 6: Pib thiab Rov Pib Timer

Kuv txuas 24VDC qhov taw qhia lub teeb pom kev thoob plaws & Qhov Qhib Qhib ntawm qhov txuas. Thaum lub timer yog ON, cov davhlau ya nyob twg tau luv dua yog li ua tiav qhov Circuit Court.

Koj tuaj yeem hloov pauv Potentiometer los kho thiab teeb tsa lub sijhawm ncua.

Momentary hloov S1 yog siv los Pib lub sijhawm. Lub sijhawm tuaj yeem rov pib dua thaum lub sijhawm hloov pauv los ntawm nias lub sijhawm hloov pauv S2.

Kauj Ruam 7: Txhawb Cov Haujlwm no

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• Cov lus qhia: ElectroGuruji

Koj puas yog tus kws tshaj lij lossis tus nyiam ua haujlwm uas muaj lub tswv yim zoo rau qhov tshwj xeeb hauv qhov haujlwm no? Tej zaum koj muaj lub tswv yim zoo rau kev kho kab laum? Xav tias dawb los laij cov lej los ntawm GitHub thiab tinker nrog nws. Yog tias koj muaj lus nug/tsis txaus ntseeg cuam tshuam nrog txoj haujlwm no, tso lawv rau hauv nqe lus lus thiab kuv yuav sim kuv qhov zoo tshaj los teb lawv.