Dc Tsav Ceev Tswj Circuit: 5 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:25

Hauv kab lus luv luv no, peb tab tom nrhiav kom paub yuav ua li cas thiaj tsim tau DC lub cev muaj zog nrawm tawm tswv yim tsis zoo. Feem ntau peb tab tom nrhiav kom pom tias lub Circuit Court ua haujlwm li cas thiab dab tsi txog PWM teeb liab? thiab txoj hauv kev PWM teeb liab tau ua haujlwm los tswj hwm DC lub zog tsav.

Tswv yim

DC lub cev muaj zog tuaj yeem yog qhov thauj khoom dawb yog li yog tias koj xav tswj hwm qhov nrawm ntawm DC lub cev muaj zog ces peb tau nce / nqis qis dua qhov siab dua / qis dua. tab sis qhov ua tau zoo dua qhov hluav taws xob thiab qis dua qhov hluav taws xob tsis yog qhov ua tau li ntawd, thaum lub sijhawm no, peb siv lwm txoj hauv kev uas yog lub npe PWM zoo dua hu ua pulse width modulation.

Lo lus PWM yog hu ua Pulse Width Modulation. Piv txwv tias muaj qhov hluav taws xob ntawm 5 volts uas tau qhib thiab tawm hauv ib ntus. Qhov no rau / tawm lub teeb tshwj xeeb tshaj yog nthuav tawm raws li lub luag haujlwm tam sim no yog tias muaj 50% kev ua haujlwm nyob rau hauv qhov hluav taws xob tso tawm yuav yog 50% ntawm 5 volts yog li nws yuav luag ze li 2.5 volts. Lub voj voog ua haujlwm feem ntau yog 25% ntawm tsib caug lossis 90% lossis tej zaum 100%. yog li tam sim no koj yuav xam seb qhov hluav taws xob yuav mus li cas thaum lub voj voog ua haujlwm yuav nyob rau qee lub sijhawm. Tam sim no tus PWM Pulses khiav lub transistor thiab nws khiav Lub Cev.

Lub Caij Nyoog Tsav Tsheb tsis zoo tawm tswv yim Circuit Court ua haujlwm li cas? Qhov no yog qhov yooj yim Circuit Court uas tau tsim los ntawm 555 timer IC uas tuaj yeem tsim Square Wave Pulses. Muaj ntau yam khoom pub dawb rau tsim PWM pulses los ntawm 555 timer IC. rau kev hloov pauv lub luag haujlwm ntawm PWM pulses peb tab tom ua haujlwm 100K potentiometer.

Tus Pin tsis muaj 3 ntawm 555 timer IC muab PWM pulses cov mem tes no tsis muaj zog txaus los khiav DC lub cav. Yog li qhov peb xav sim ua yog txhawm rau ua kom lub teeb liab nrov. Rau kev nthuav dav ntawm Circuit Court, peb tau siv N-channel MOSFET IRFZ44N.

Lub rooj vag tus pin ntawm MOSFET txuas nrog No 3 tus pin ntawm 555 timers los ntawm tus tiv thaiv. Thaum MOSFET tau txais High PWM pulses ces lub luag haujlwm yuav tsum ua kom siab li ntawd nws txhais tau tias tam sim no ntau dua yuav yog qhov ntws mus rau qhov chaw, thaum lub sijhawm no, lub cav yuav nrawm dua hauv qhov nrawm tshaj plaws.

Tib rooj plaub tshwm sim thaum PWM mem tes tsawg. nyob rau hauv cov haujlwm qis, cov transistor yuav raug hloov pauv hauv qhov qis heev. Yog li, vim li no, lub cev muaj zog yuav qis qis thaum lub sijhawm no.

Khoom siv

Xav Tau Cov Khoom Rau LED Dimmer Circuit:

IRFZ44N:

LED:

Resistor:

Capacitor:

Cov Cuab Yeej Xav Tau:

Soldering Iron:

Iron Stand:

Pliers Qhov ntswg:

Flux:

Kauj ruam 1:

Nov yog Qee Cov Duab rau tsim Circuit. Kuv txawm tias tau ua DC Lub Cev Muaj Zog Tswj Hluav Taws Xob Circuit hauv PCB rau tsim lub Circuit Court kom yooj yim li sai tau. koj tseem yuav ua qhov Circuit hauv Breadboard. Tab sis kuj tseem yuav muaj kev sib txuas xoob Yog li kuv txawm tias tau muag ncaj qha tag nrho Cov Cheeb Tsam. Yog li, yuav tsis muaj kev sib txuas xoob.

Kauj ruam 2:

Kauj ruam 3:

Kauj ruam 4:

Kauj Ruam 5: Schematics Circuit:

Nco tseg:

Ntawm no kuv txawm siv IRFZ44N n channel MOSFET uas muaj peev xwm ua tau siab amperes. Tab sis koj tseem yuav siv qee yam ntawm N-Channel MOSFETs. Qhov ntsuas ampere kuj tseem yuav zoo rau lwm MOSFETs. 555 timer IC xav tau hluav taws xob txuas ntxiv yog li ntawm no kuv txawm siv 7805 IC rau qhov hluav taws xob tas li ntawm 7 txog 35 volt.

koj tseem yuav siv qhov hluav taws xob zoo li 5 volts rau kaum tsib volts rau 555 timer IC. Kuv tau txuas lub diode ua ke nrog lub cev muaj zog. qhov no feem ntau yog rau tom qab EMF Kev Tiv Thaiv ntawm lub cav. qhov no yuav tsis ua rau MOSFET los ntawm Rov Qab EMF. qhov no feem ntau yuav tsum tau ua. Koj tseem tuaj yeem nyeem peb lwm tsab xov xwm: Nyem qhov no