Ob Khawm Hloov Hloov: 3 Kauj Ruam

2024 Tus sau: John Day | [email protected]. Kawg hloov kho: 2024-01-30 09:24

Kab lus no qhia koj yuav ua li cas thiaj tig tau ON thiab Tua OFF lub pob nyem hloov.

Lub voj voog no tuaj yeem ua tiav nrog ob tus tes hloov qhov. Koj nias ntawm ib qho kev hloov pauv thiab lub teeb pom kev tig ON. Koj nias rau lwm qhov hloov pauv thiab lub teeb taws tig OFF. Txawm li cas los xij, Cov Lus Qhia no qhia koj yuav ua li cas ua cov cuab yeej zoo sib xws nrog cov nyees khawm. Lub relay ua haujlwm zoo li lub latch, qhib los ntawm thawj lub pob. Qhov thib ob khawm hloov lub latch OFF.

Koj tuaj yeem pom lub voj voog no ua haujlwm hauv kuv daim vis dis aus.

Khoom siv:

Cheebtsam: relay (lub zog qis), lub zog siv hluav taws xob (roj teeb / lub zog siv hluav taws xob), 100 uF capacitor, 10 -ohm resistor (lub zog siab) - 2, lub hom phiaj dav dav diode - 1, lub teeb / ci LED, lub teeb pom kev zoo, thawb cov nyees khawm - 2, cov laug, daim duab los qhia, daim kab xev nplaum (daim npog/meej).

Cov khoom siv xaiv tau: roj teeb hlua.

Cov cuab yeej: Cov laug cam, cov hlua hlau, txiab.

Cov cuab yeej xaiv tau: voltmeter, multi-meter, https://ecsp.ch software.

Kauj ruam 1: Tsim Circuit Court

Khawm 1 tsub tus capacitor C1 thiab tig lub relay ON. Khawm 2 tso lub capacitor C1 thiab tig lub relay OFF.

Kuv siv roj teeb 9 V rau 12 V xa tawm. Nov yog txoj hauv kev pheej hmoo. Hmoov tsis zoo tshaj plaws, yog 12 V relays.

Kuv siv lub teeb 12 V rau kuv lub vojvoog vim qhov no yog qhov kuv twb muaj hauv Tshuag lawm. Lub teeb ci ci yuav tsum tau muaj kev ntxub ntxaug ntawm 2 V. Nws yuav hlawv ntawm qhov hluav taws xob siab dua 2 V.

Xam tus nqi tiv thaiv uas xav tau txuas nrog hauv kab nrog lub teeb ci ci:

Rled = (Vs - Vled) / IledMax = (12 V - 2 V) / 10 mA = 1,000,000 ohms lossis 1 kohms

Xam cov khoom siv ntau tshaj tam sim no thaum ob lub pob qhib rau tib lub sijhawm:

IsMax = (Vs - Vd) / R1

Vs = 9 V: IsMax = (9 V - 0.7 V) / 10 ohms = 8.3 V / 10 ohms = 0.83 A = 830 mA

Vs = 12 V: IsMax = (12 V - 0.7 V) / 10 ohms = 11.3 V / 10 ohms = 1.13 A = 1130 mA

Xam qhov siab tshaj tam sim no hla Khawm 2 thaum hloov OFF:

Ib2Max = Vs / R1 + Vs / R2

Vs = 9 V: Ib2Max = 9 V / 10 ohms + 9 V / 10 ohms = 1.8 A

Vs = 12 V: Ib2Max = 12 V / 10 ohms + 12 V / 10 ohms = 2.4 A

Kauj Ruam 2: Simulation

Kev sim qhia pom tias tom qab khawm 1 tau tso tawm (ntawm 0.5 vib nas this), muaj qhov poob me me ntawm qhov tso tawm qhov hluav taws xob. Ob qho kev tshaj tawm thiab cov khoom hluav taws xob poob los ntawm 0.1 V. Txawm li cas los xij, qhov txuas txuas tseem nyob.

Qhov hluav taws xob 0.1 V poob tshwm sim vim tias kev sib txuas ua haujlwm tsis yog 0 ohms. Lub xeev ruaj khov uas siv cov khoom siv hluav taws xob tuaj yeem muaj cov yam ntxwv ntawd. Qhov no yuav tsis yog rooj plaub rau cov khoom siv txuas uas siv cov khoom siv sib hloov.

Ntawm 1 lub sijhawm thib ob hauv lub sijhawm, Khawm 2 theem/sijhawm ncua, Khawm 2 raug nias thiab lub relay tig OFF. Ntawm 2 vib nas this taw tes hauv lub sijhawm, lub voj voog tshiab pib.

Kauj Ruam 3: Ua Circuit Court

Hauv kev tsim hluav taws xob, R2 thiab Rrelay yog luv luv Circuit Court (Kuv tsis tau siv cov resistors) thiab Drelay tsis suav nrog. Kuv kuj tseem siv lub diode hauv kab nrog Khawm 2 kom tso lub relay vim tias kuv lub diode muaj kev tiv thaiv ntawm 10 ohms (tsis yog txhua lub diodes muaj qhov ua haujlwm no). Tom qab ntawd kuv hloov kho Cov Lus Qhia no, los hloov cov diode nrog R2 resistor (Kuv kuj yuav tsum tau hloov qhov kev sib txuas ntawm R2 - tsis txuas nrog hauv koob nrog khawm 2). Rrelay thiab Drelay kuj tau ntxiv. Drelay tiv thaiv cov khoom puas vim raug tso tawm. Rrelay tau siv los tiv thaiv kev puas tsuaj rau lub capacitor (Crelay) thaum lub sijhawm xa tawm.

Koj tuaj yeem pom cov lej xim ntawm peb tus tiv thaiv daj.

Cov xim yog:

Daj - 4

Ntshav - 7

Dub - 0 (tus lej zeros tom qab 47)

Qhov no txhais tau tias tus nqi tiv thaiv yog 47 ohms. Cov kub kub yog qhov ua siab ntev hauv cov tiv thaiv, txhais tau tias 5 %. Qhov ntawd txhais tau tias tus nqi tiv thaiv tuaj yeem nyob txhua qhov chaw ntawm 47 * 0.95 = 44.65 ohms txog 47 * 1.05 = 49.35 ohms.

Kuv siv peb 47 ohm resistors thiab ceramic resistor yog 56 ohms.

R1 = 1 / (1 /47 ohms + 1 /47 ohms + 1 /47 ohms + 1 /56 ohms) = 12.2418604651 ohms

Qhov no yog kwv yees li 10 ohms.

Ob lub khawm yog los ntawm VCR qub (Video Cassette Recorder).