Cov txheej txheem:
- Khoom siv
- Kauj ruam 1: Tsim Circuit Court
- Kauj Ruam 2: Simulation
- Kauj Ruam 3: Ua Circuit Court
- Kauj Ruam 4: Kaw thiab Xeem
Video: Teeb Infrared: 4 Kauj Ruam
2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24
Txoj haujlwm no qhia pom lub teeb taws teeb taws uas tig ON rau ib nrab feeb tom qab nws tau txais lub teeb liab los ntawm lub TV infrared chaw taws teeb tswj. Koj tuaj yeem pom lub Circuit Court ua haujlwm hauv video.
Kuv tsim lub Circuit Court nrog BJT transistors tom qab nyeem kab ntawv no:
Kuv hloov kho lub Circuit kom tsav lub zog tam sim no ntau dua thiab khaws lub teeb ON rau lub sijhawm me me.
IR (infrared) tus txais tau qhov siab tshaj plaws txog 20 meters. Txawm li cas los xij, thaj tsam no tuaj yeem me dua sab nraum vim yog kev cuam tshuam los ntawm tshav ntuj. Kuv tsis tau sim IC no hauv 40-degree lub caij sov lub caij sov.
Txawm li cas los xij, qhov Circuit no tuaj yeem tsim nrog tsuas yog ib qho MOSFET:
www.instructables.com/MOSFET-Touch-Lamp/
Tseem MOSFETs raug nqi ntau dua. Lub hwj chim txhim khu kev qha MOSFET tuaj yeem siab li $ 3 Tebchaws Asmeskas. Nws yog qhov zoo tshaj kom xaj ob peb MOSFETs vim tias nws tuaj yeem ua rau muaj kev ntxhov siab heev yog tias koj hlawv ib qho ntawm lawv thiab yuav tsum tau tos rau lub lis piam kom txog thaum lwm tus tuaj.
Cov kab ntawv txuas no qhia cov lus qhia qhia txog lub teeb pom kev zoo ua los ntawm transistors:
www.instructables.com/Transistor-Sensor-Amplifier/
www.instructables.com/Recycled-Transistor-Amplifier/
Khoom siv
Cheebtsam: NPN lub hom phiaj transistors - 5, PNP lub hom phiaj transistors - 5, lub zog transistors - 4, 1 kohm resistor - 1, 100 kohm resistor - 1, 1 Megohm resistor - 1, 100 ohm siab zog resistors - 10, diodes - 5, 470 uF capacitors - 10, board matrix - 2, Thaum tshav kub kub tog TO220 lossis TO3 - 2, solder, 6 V teeb pom kev zoo lossis 6 V LED teeb.
Yeem cheebtsam: encasement/box.
Cov cuab yeej: cov hlau txuas.
Yeem cov cuab yeej: multimeter, USB oscilloscope.
Kauj ruam 1: Tsim Circuit Court
Kuv tsim 5 V fais fab mov rau IR tus txais TTL qhov hluav taws xob. Txawm li cas los xij, niaj hnub no feem ntau cov neeg txais IR tuaj yeem ua haujlwm ntawm qhov hluav taws xob los ntawm kwv yees li 2.5 V txog li 9 V lossis txawm tias 20 V. Koj yuav tsum tau txheeb xyuas qhov tshwj xeeb/cov ntawv teev tseg. Qhov no yog vim li cas kuv TTL lub zog xa hluav taws xob yog nyob ntawm yeem. Koj yuav tsum muaj peev xwm txuas IR tus txais hluav taws xob ncaj qha rau Cs2 lub tshuab hluav taws xob lossis ua lwm qhov RC lub zog xa hluav taws xob tsawg dhau lim hluav taws xob los ntawm cascading/txuas Cs1 capacitor thiab Rs1 resistor rau Cs2.
Lub Circuit Court uas kuv tsim tsis yog qhov kev daws teeb meem zoo tshaj plaws vim tias qee qhov transistors tsis txaus. Kuv yuav tsum siv yam kuv muaj hauv Tshuag yog li thov qhov ntsuas hluav taws xob hauv qab no teeb tsa rau Q2 transistor.
Koj tuaj yeem nyem rau ntawm ob qhov kawg txuas ntawm nplooj ntawv dhau los ntawm kab lus no thiab pom koj tus kheej:
www.instructables.com/Transistor-Sensor-Amplifier/
www.instructables.com/Recycled-Transistor-Amplifier/
Xam lub sijhawm tso tawm tas li:
Tdc = (Rb1 || Rdc) * Cdc = 470 uF = 156.666666667 vib nas this
Nws siv sijhawm 5-lub sijhawm tas li rau lub capacitor kom tawm mus. Txawm li cas los xij, tom qab kwv yees li ib feem peb ntawm lub sijhawm tas li lub teeb yuav tsum tig tawm. Cov transistor siab dua tam sim no nce yuav ua rau lub teeb ON ntev dua. Koj tuaj yeem nce lub sijhawm tso tawm los ntawm kev txuas lwm 470 uF capacitor ua ke nrog Cdc.
Kauj Ruam 2: Simulation
Simulations qhia tias:
1. Tus IR txais TTL qhov hluav taws xob yog li 5 V.
2. Lub capacitor tso tawm qeeb.
3. Lub 6 V lub teeb yuav tau txais 300 mA tam sim no uas nws xav tau los qhib kom puv ci ci. Lub teeb tig tig tom qab 90 vib nas this, tsis yog 30 vib nas this qhia hauv video. Qhov no yog vim qhov sib txawv ntawm cov qauv simulation thiab cov tswv yim siv tam sim no transistor.
Kauj Ruam 3: Ua Circuit Court
Kuv ntxiv 470 uF cov khoom siv kom zoo dua lub zog tso suab nrov lim (qhov no yog vim li cas kuv thiaj tau sau kaum kaum 470 uF capacitors hauv daim ntawv teev npe).
Kuv siv tsib lub transistors ib txwm ua ke thiab lub zog transistor los tsav lub teeb. Yog tias koj siv 6 V LED teeb pom kev ces koj yuav tsum txiav txim siab qhov sib txawv ntawm cov khoom siv no vim tias LED ua rau ib qho nkaus xwb. LED teeb siv ntau qhov tsawg dua tam sim no dua li cov teeb ci ib txwm muaj. Txawm li cas los xij, muaj cov qij LED ci uas siv ntau dua tam sim no.
Koj tuaj yeem pom lub rooj tsav xwm matrix nrog lub teeb pom kev txuas. Pawg thawj coj ntawm pawg no yog 5 V TTL lub zog siv. Kuv siv ob 100-ohm resistors nyob rau hauv sib npaug ces muab 50 ohms los txo lub zog hluav taws xob rau txhua tus tiv thaiv thiab xyuas kom meej tias TTL lub zog hluav taws xob qhov hluav taws xob tsis poob ntau dhau vim tias muaj lub zog hluav taws xob tiv thaiv qhov tseem ceeb.
Kauj Ruam 4: Kaw thiab Xeem
Kuv siv lub thawv yas lws suav kom txuag nyiaj los ntawm kev yuav lub thawv.
Pom zoo:
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