Qhov Taw Qhia Teeb: 4 Kauj Ruam

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

Cov kab lus hauv kab lus no qhia txog kev taw qhia ntawm qhov tam sim no ntws nrog ob lub qhov muag teeb.

Qhov ntsuas no tuaj yeem siv nrog LEDs ib yam. Siv LEDs lossis LEDs ci siv lub teeb qij yuav txo tus nqi thiab txhim kho kev ua haujlwm ntawm qhov kev tshwj xeeb no.

Khoom siv

Cheebtsam: lub teeb pom kev zoo - 5 (1.5 V, 6 V, 12 V), 2.2 ohm resistors (lub zog siab) - 2, lub hom phiaj dav dav diodes - 10, pawg thawj coj saib, thaiv cov xov hlau, cov tuav lub teeb.

Cov cuab yeej: hlau stripper, pliers.

Cov khoom siv xaiv tau: cov laug, cov duab los qhia, cov khoom siv hluav taws xob (los ntawm 470 uF txog 4700 uF) - 2.

Cov cuab yeej xaiv tau: USB Oscilloscope, cov hlau txuas.

Kauj ruam 1: Tsim Circuit Court

Kuv siv 1.5 V qhov muag teev.

Xam qhov siab tshaj tam sim no hla R1 resistor:

Ir1max = Vr1 / R1 = (Vin - Vd1a - Vd1b - Vd1c) / R1

= (3 V - 0.7 V * 3) / 2.2 ohms = 0.9 V / 2.2 ohms

= 0.40909090909 A = 409.09090909 mA

Xam qhov ntsuas siab tshaj plaws ntawm lub zog ntsuas:

Pr1max = Vr1 * Vr1 / R1 = 0.9 V * 0.9 V / 2.2 ohms

Opaque = 0.36818181818 Watts

Kuv tau siv 1 Watt resistor rau kuv lub Circuit Court.

Kauj Ruam 2: Simulation

Kev sim qhia pom lub teeb pom kev siab tshaj plaws tam sim no txog 0.3 A.

IbulbMax = (Vd * 2) / Rbulb = 0.7 V * 2 /5 ohms = 0.28 A

Lub teeb pom kev zoo yuav tsum tsis txhob ua qauv raws li tus tiv thaiv yooj yim. Txawm li cas los xij, lub teeb 1.5 V nrog qhov ntsuas siab tshaj tam sim no lossis 0.3 A tuaj yeem kwv yees li 1.5 V / 0.3 A = 5-ohm resistor.

Kauj Ruam 3: Ua Circuit Court

Kuv siv ob lub Soviet diodes thiab ib 100 uF bipolar capacitor vim kuv tsis muaj 1000 uF bipolar capacitor.

Cov xaim dawb muab rau tus neeg siv xaiv ntawm hla lub capacitor uas yuav twv yuav raug hu txo qis qhov muaj peev xwm hla lub teeb.

Kauj ruam 4: Xeem

Kuv txuas kuv lub xov tooj mus rau 3 V DC lub zog xa khoom, hla dhau 100 uF lub tshuab hluav taws xob thiab tsuas yog thawj lub teeb pom kev tig rau. Kuv mam li thim rov qab cov kev taw qhia ntawm tam sim no (pauv mus rau cov khoom sib txuas) thiab tsuas yog lub teeb thib ob tig rau. 3 V cov tswv yim yog qhov siab tshaj plaws rau qhov kev tiv thaiv no txhawm rau tiv thaiv qhov tsis ua haujlwm ntawm qhov muag teeb, tiv thaiv, thiab diodes.

Kuv lub cim hluav taws xob tsis tuaj yeem tsav txawm tias ib lub teeb. Nws tsis tuaj yeem tsim hluav taws xob txaus tam sim no (0.3 A) thiab lub qhov muag teeb tau tsaus. Kuv tab tom xav yuav Class D amplifier. USB Class D amplifier yuav muaj qhov tsis zoo tam sim no. Yog li kuv yuav xav tau lub tshuab hluav taws xob uas siv tau Class D amplifier.