Tsis Siv Neeg Chaw Taws Teeb ON / OFF Siv MIC Jack ntawm Koj Lub Koob Yees Duab / Tsawg Voltage Solid State Relay: 4 Kauj Ruam (nrog Duab)

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

Txheej txheem cej luam: Peb tau siv lub MIC jack ntawm lub koob yees duab txhawm rau txheeb xyuas thaum lub koob yees duab qhib. Peb tau tsim cov khoom siv hluav taws xob tsawg hauv lub xeev kom pom lub MIC nkaus thiab qhib thiab kaw lub cuab yeej nyob deb tib lub sijhawm tib yam li lub koob yees duab. Cov khoom siv hauv lub xeev ruaj khov yog cov cuab yeej siv dav dav uas tuaj yeem siv rau ntau txoj haujlwm - nws yog cov khoom siv hluav taws xob yooj yim thiab pheej yig.. Peb muab lub koob yees duab tso rau hauv lub thawv kaw, thiab muaj lub koob yees duab me me uas tsis muaj dej uas peb ntsaws rau hauv lub 'video-in' jack ntawm lub koob yees duab. peb siv lub chaw taws teeb tswj rau lub koob yees duab uas nyob sab nraum lub thawv (nws siv tus qauv Sony LANC txuas rau lub koob yees duab). Yog li, lub koob yees duab nws tus kheej tsuas yog siv ua cov ntaub ntawv-kaw cov cuab yeej, lub koob yees duab tsis muaj dej tsis siv lub vis dis aus. Lub koob yees duab tsis siv dej siv nws tus kheej lub roj teeb, nws yooj yim heev tsis nco qab qhib nws lossis tua thaum peb tawm ntawm dej hauv qhov xwm txheej nruj! peb tsoo 'cov ntaub ntawv' ntawm lub koob yees duab, thiab nws zoo siab sau tseg los ntawm lub koob yees duab tsis muaj dej vim peb tsis hnov qab qhib nws! Ntxiv rau qhov teeb meem - lub koob yees duab tsis muaj dej siv ntau lub zog! Nws ua haujlwm ntawm 8 -AA roj teeb pob thiab kav ntev txog 90 feeb thaum nws nyob ntawm - ouch! Feem ntau peb yuav tawm ntawm dej rau ib nrab hnub tsawg kawg, yog li txawm tias peb nco ntsoov qhib lub koob yees duab tsis muaj dej, peb feem ntau tsis nco qab tig nws tawm yog li nws tsis siv lub zog ntev ua ntej lub koob yees duab ploj mus. Lub tswv yim: Yam peb xav tau yog txoj hauv kev tig lub koob yees duab tsis pom dej tso rau hauv thiab tawm tib lub sijhawm zoo li lub koob yees duab hauv lub thawv ntim khoom. peb tab tom siv cov chaw taws teeb tswj kom qhib thiab tua lub koob yees duab, peb yuav ua li cas thiaj tau tib lub chaw taws teeb los qhib thiab kaw lub koob yees duab? Thaum xub thawj peb xav tias peb yuav hack lub chaw tswj chaw taws teeb, tab sis tom qab khawb me ntsis peb tau kawm tias Sony LANC tus qauv nws siv yog nyuaj - peb xav tau lub microcontroller los ua dab tsi nrog nws. Puas muaj txoj hauv kev yooj yim dua? Kev daws teeb meem: Peb tau tshawb fawb me ntsis nrog peb lub multimeter, thiab pom tias MIC jack ntawm peb lub koob yees duab sony muab lub zog me me rau lub microphone, thiab tseem ceeb tshaj - nws tig lub zog no rau thiab tawm tib lub sijhawm uas lub koob yees duab tau qhib thiab kaw nrog cov chaw taws teeb tswj! ntawm peb lub koob yees duab, peb pom tias MIC jack muab lub zog 2.0V thaum lub koob yees duab kaw. Qhov no tsis txaus voltage lossis tam sim no rau kev sib nqus sib nqus sib txuas. Peb yuav tsum ua kom muaj kev nkag siab zoo hauv lub xeev. - qhov hluav taws xob hluav taws xob yooj yim heev thiab pheej yig siv tsuas yog 3 lossis 4 yam khoom. Lub Circuit Court yuav ua haujlwm zoo ib yam li kev xa tawm ib txwm muaj, tab sis nws yuav ua haujlwm siv 2V teeb liab thiab kos lub zog qis dua li lub microphone yuav.

Kauj Ruam 1: Qhov Chaw

Nov yog qee cov duab ntawm peb teeb tsa dej tsis sib haum nrog lub koob yees duab, lub thawv, lub koob yees duab tsis muaj dej nyob deb, LANC cov chaw taws teeb tswj, thiab lwm yam.

Kauj Ruam 2: Qhov Chaw - Lub Xeev Sib Txuas

Nov yog yam peb xav tau txhawm rau txhim kho lub xeev ruaj khov. Tsuas yog xaiv qhov tsim nyog FET's koj tuaj yeem hloov kho qhov xwm txheej hauv lub xeev txuas mus rau ntau qhov siv: nws tuaj yeem me me, nws tuaj yeem hloov hluav taws xob mus txog 20V, nws tuaj yeem ua haujlwm nrog tswj lub teeb liab hluav taws xob ntawm 1V thiab 20V, nws tuaj yeem ua haujlwm txog 100A tam sim no lossis ntau dua nrog FET loj. Kuv tau xaiv FET pob uas muaj ob qho N thiab P fet hauv ib qho nti. Hom cuab yeej no tsuas muaj nyob hauv pob ntim saum toj no yog li kuv kuj tau txais me ntsis Surfboard los teeb tsa nws thiab txuas cov thaiv thiab cov tiv thaiv rau. Hauv qab no kuv tham txog FET qhov ntau me ntsis yog tias koj xav siv cov cuab yeej sib txawv. Txhua ntu muaj los ntawm digikeyParts:

• R1: 22k ohm resistor
• R2: 22k ohm resistor
• Q1: N-hom FET nrog qhov pib qis qis (irf7309 lossis fds8958)
• Q2: P-type FET nrog qhov pib qis voltage (irf7309 lossis fds8958)
• Surfboard 9081 los tsim (digikey ntu 9081CA)
• MIC ntsaws rau txuas rau lub koob yees duab
• fais fab ntsaws los txuas rau lub koob yees duab thiab roj teeb pob (lossis koj tuaj yeem xaim xaim)

Muaj ntau qhov kev xaiv rau FET qhov nyob ntawm ntau npaum li cas lub zog koj lub xeev cov khoom sib txuas yuav hloov pauv thiab tawm. FET cov npe saum toj no tau ntsuas rau 5A tam sim no, 20V qhov siab tshaj plaws (txheeb xyuas Vgs thiab Vds), 4.5V ua haujlwm puv ntoob thiab nyob ntawm qhov pib ib puag ncig 1.5V. Kuv feem ntau pom nws yooj yim mus ncaj qha rau FET chaw tsim khoom kom pom qhov FET raug, sim https://www.fairchildsemi.com/parametric/ss.jsp?FAM=MOSFET lossis https://www.irf.com/ cov khoom lag luam-cov ntaub ntawv/hexfet/Xaiv Q1: N-FET tsuas yog siv los qhib thiab kaw Q2, nws tuaj yeem yog cov cuab yeej siv qis-tam sim no thiab qhov kev xaiv tseem ceeb tsuas yog lub qhov rooj nkag qhov hluav taws xob. Rau peb txoj haujlwm peb xav tau lub cuab yeej pib qis kom qhib thiab tawm ntawm 2.0V MIC nkaus. Qhov FET feem ntau tau ntsuas rau 10V "rau", thiab muaj qhov rooj qhov rooj qhov hluav taws xob tiag tiag (Vgs pib) ib puag ncig 3-4V. low-threshold FET's yog ib txwm muaj, koj tsuas yog yuav tsum tau txheeb xyuas cov ntawv tshwj xeeb kom paub tseeb tias koj muaj qhov yog. Koj tuaj yeem tau txais FET's nrog qhov pib qis li 1V. Koj kuj yuav tsum tau txheeb xyuas tias Vgs qhov kev ntsuas siab tshaj plaws siab dua koj lub roj teeb tseem ceeb. Qhov Q2: Nov yog P-FET uas hloov lub zog tseem ceeb. Xaiv FET uas tuaj yeem tswj hwm qhov tam sim no koj xav tau (feem ntau koj yuav xaiv ib qho nrog 5x qhov ntsuas tam sim no kom nws tsis nkim lub zog thiab tsis xav tau lub rhaub dej kub xav tau). Yog tias koj tab tom hloov qis dua 6V lub zog siv ces koj yuav xav tau tus nqi qis FET ntawm no ib yam. Raws li ua ntej ua kom ntseeg tau tias qhov siab tshaj plaws Vgs qhov ntsuas tau loj dua lub roj teeb hluav taws xob.

Kauj Ruam 3: Lub Circuit Court - Solid State Relay

Nov yog Circuit Court. Nws muaj txiaj ntsig zoo rau ntau yam, tab sis raws li tus piv txwv rau peb lub koob yees duab MIC kev sib txuas:

• IN+ thiab IN- txuas rau 8-AA roj teeb pob txhawb lub koob yees duab tsis muaj dej
• OUT+ thiab OUT- txuas rau lub hwj chim nkag ntawm lub koob yees duab tsis muaj dej
• SENSE+ thiab SENSE- txuas rau MIC nkaus ntawm lub koob yees duab. MIC jack yeej yog lub tso suab MIC nkaus xwb, txuas ib ntawm ob txoj hauv kev raws li (+) thiab tsis quav ntsej lwm qhov.

Kauj ruam 4: Ua tiav

Kuv tau npog cov kab hluav taws xob ua tiav hauv cov kua nplaum kub los tiv thaiv nws.