Cov txheej txheem:
- Kauj Ruam 1: Tsim Cov Phiaj Xwm
- Kauj Ruam 2: Cov Rooj Sib Tham Cov Rooj Sib Tham
- Kauj ruam 3: Ua haujlwm
Video: Panic Alarm Button Circuit Siv 555 Timer IC (Ntu -2): 3 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:27
Hav guys! Nco Ntsoov-1 ntawm cov lus qhia no. Yog tias tsis tau saib ntawm no.
Txuas ntxiv mus…
Panic Alarm Circuit tau siv los xa lub teeb liab xwm txheej tam sim rau cov neeg nyob hauv ib qho chaw nyob ze kom hu rau kev pab lossis ceeb toom rau lawv. Qhov xwm txheej txaus ntshai tuaj yeem yog ib qho, nws tsis txwv rau qee qhov xwm txheej. Ib tus tuaj yeem tuaj yeem khaws lub laub khawm ntawm tes kom ncav cuag qhov deb lossis qhov chaw xis nws ua kom nrawm nrawm hauv qhov ntsiag to los ntawm nias ib lub pob. Qhov taw qhia ntawm xwm txheej ceev tuaj yeem yog nyob rau hauv daim ntawv ntawm pom lossis hnov lub teeb liab, uas tuaj yeem kho tau ntawm ob peb metres deb los ntawm xaim.
Kauj Ruam 1: Tsim Cov Phiaj Xwm
Cov duab saum toj no qhia txog kev tsim PCB pawg thawj coj los ntawm LionCircuits - Kuv ntseeg PCB cov tuam txhab tsim khoom.
Cia peb pib nrog kev sib sau ua ke ntawm pawg tswj hwm no.
Kauj Ruam 2: Cov Rooj Sib Tham Cov Rooj Sib Tham
Cov duab saum toj no qhia tag nrho cov khoom sib dhos ua ke ntawm PCB Board. Kuv tau siv lub roj teeb 9 v rau cov khoom siv nkag.
Lawv txawv los ntawm tus naj npawb ntawm cov xeev ruaj khov hauv Circuit Court. Hauv peb qhov xwm txheej, peb xav tau ob lub xeev ruaj khov. Ib lub xeev tau ceeb toom ON thiab lwm lub xeev ceeb toom OFF. Yog li ntawm no peb tau teeb tsa 555 hauv Bistable hom. Thaum nias lub pob, lub teeb liab yuav tsum raug xa mus rau qhov chaw nyob hauv daim ntawv hnov thiab pom. Txhawm rau tua lub tswb peb siv lwm lub pob nyob ntawm peb qhov chaw lossis ntawm qhov chaw qhia. Nov yog Kev Tsov Rog Yooj Yim Yooj Yim nrog kev ua haujlwm qis tam sim no tau ua tiav.
Kauj ruam 3: Ua haujlwm
Thaum xub thawj, TRIGGER tus pin 2 thiab RESET tus pin 4 tau rub los siv tus tiv thaiv R1 thiab R2. Ntawm nias lub SET khawm tus ua rau tus pin 2 mus qis (<Vcc/3) ua qhov tso tawm ntawm tus lej sib piv sab hauv 555 mus rau qhov siab tam sim. Qhov no teeb tsa flip-flop thiab OUTPUT tus pin mus siab thiab tseem nyob hauv lub xeev no kom txog thaum muaj teeb liab rov pib dua.
Cov txheej txheem ntawm kev rov pib dua 555 yog ua tiav los ntawm nias lub pob RESET. Qhov no ua rau RESET tus pin mus 4 qis (<Vcc/3) rau ib ntus uas txuas ncaj qha rau flip0flop los ntawm transistor. Vim li no, lub flip-flop tau rov pib dua thiab cov zis tau qis thiab nyob hauv lub xeev no kom txog rau thaum muaj qhov tshwm sim tom ntej.
Cov teeb liab tso tawm mus txog lub hauv paus dav ntawm BC547 thiab lub transistor tig ON. Tam sim no lub buzzer thiab LED txuas nrog transistor kuj tig ON. NPN transistor yog lub cuab yeej tswj tam sim no. Kawm paub ntau ntxiv txog NPN Transistor ntawm no.
NPN transistor tau siv los ua kev tswj hwm uas nws lub teeb liab tswj tau muab los ntawm 555 IC. Raws li kev tswj hwm lub teeb liab mus rau lub hauv paus dav dav, qhov dej ntws tam sim no los ntawm lub davhlau ya nyob twg mus rau lub davhlau ya nyob twg emitter tshwm sim.
Kev tswj Transistor lossis kev tswj hwm kev xa tawm yuav yog qhov kev ntseeg siab rau kev tswj hwm kev hloov pauv.
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