Random Number Generator: 5 Cov Kauj Ruam (nrog Duab)

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

Kab lus no qhia koj txog qhov sib piv ntawm tus lej tsim hluav taws xob.

Lub voj voog no pib tsim cov zis tsis raug thaum tib neeg kov lub davhlau ya nyob twg. Cov khoom siv hluav taws xob tau nthuav dav, sib koom ua ke thiab txuas ntxiv ua suab nrov los ntawm tib neeg uas ua zoo li lub kav hlau txais xov, sib sau ua hluav taws xob lub suab nrov.

Lub Circuit Court qhia tawm tswv yim tsis ncaj ncees transistors. Koj yuav tsum xaiv tus tawm tswv yim tawm tsam kom lub transistor sau cov hluav taws xob tso tawm hluav taws xob ntawm tag nrho plaub lub transistors tau txiav txim siab ib nrab ntawm qhov muab hluav taws xob.

yog tias koj tab tom ua lub voj voog no thov thov nyeem tag nrho tsab xov xwm txij thaum pib mus txog qhov kawg ua ntej pib ua ib qho kev npaj.

Khoom siv

Cheebtsam: cov hom phiaj dav dav transistors - 10, 470 uF capacitors - 10, 1.5 kohm resistor - 20, sib xyaw resistors (100 kohm - 1 Megohm) - 10, insulated xov hlau, matrix board/daim cardboard, 1.5 V - 4.5 V fais fab mov lossis 1.5 V AA/AAA/C lossis D roj teeb, 1.5 V roj teeb hlua/roj hmab band. Txhua tus tiv thaiv yuav tsum muaj lub zog qis.

Cov khoom siv xaiv tau: kab laug sab, 1 hli hlau xaim, 100 ohm resistors (1 Watt) - 5, qhov thaiv, ntsia liaj qhov rooj/txiv ntseej/tshuab ntxhua khaub ncaws, txuas hlau (rau txuas cov hlua txuas mus rau bolts thiab txiv ntseej).

Cov cuab yeej: pliers, xaim hlua, USB oscilloscope, voltmeter.

Yeem cov cuab yeej: cov hlau txuas, ntau lub 'meter'.

Kauj ruam 1: Tsim Circuit Court

Qhov sib xyaw ua ke hauv kuv lub hauv paus yog qhov pib qis lim lim siv los txo qhov tso zis ntau zaus los tiv thaiv tus lej tsis raug los ntawm kev hloov pauv sai heev. Capacitor voltage thiab tam sim no muaj kev sib raug zoo hauv qab no:

Ic (t) = C*dVc (t)/dt

Cc2 capacitor voltage sib npaug rau:

Vc (t) = (1/Cc)*Integral [Ic (t)]

Yog tias qhov tam sim no tsis tu ncua Cc lub peev xwm hluav taws xob qhov hluav taws xob yuav maj mam loj tuaj. Txawm li cas los xij, hauv kuv qhov Circuit ib feem ntawm qhov tam sim no nkag mus rau Rc2a resistor. Kev siv tus lej sib txuas rau qhov Circuit no tuaj yeem kho thiab lim cov sinusoidal input rau Q3 transistor, yog li hloov Q3 transistor cov tswv yim rau DC teeb liab uas yuav muab tus nqi nkag mus los ntawm Q3 thiab Q4 transistors. Qhov no yog vim li cas hauv kuv qhov Circuit Court Q2 transistor tsis yog ib qho kev sib txuas tiag tiag tab sis zoo ib yam li kev koom ua ke qhia ntawm no:

www.instructables.com/id/Transistor-Integrator/

Koj tuaj yeem hloov Rc2a thiab Cc nrog luv Circuit Court, txuas Q2 tus neeg khaws khoom mus rau Cb3 lub tshuab hluav taws xob thiab sim txuas lub tshuab hluav taws xob me me hla Rf2 resistor thiab pom dab tsi tshwm sim.

Xam qhov tsawg kawg siab dhau lim lim rau Q1, Q3 thiab Q4 transistor amplifiers:

fhpf = 1 / (2*pi*(Rb + Rc)*Cb)

= 1 / (2*pi*(1, 500 ohms + 1, 500 ohms)*(470*10^-6))

Opaque = 0.11287584616 Hz

fl = 1 / (2*pi*(1, 500 ohms + 5, 600 ohms)*(470*10^-6))

(Rb = 5, 600 ohms hauv qhov Circuit Court uas kuv tau ua)

Opaque = 0.0476940195 Hz

Muab xam los ntawm qhov qis dhau lim zaus ntau dhau qhov uas tau piav qhia hauv kab lus no. Qhov tsawg dhau lim lim tau cuam tshuam los ntawm Rc2a, Cc2, Rb3 thiab Cb3 cov khoom. Ua kom muaj nuj nqis ntawm cov khoom siv no yuav ua rau lub sijhawm tsis tu ncua thiab txo qis qhov lim qis dhau.

Qhov kawg amplifier theem ua nrog Q4 transistor yog xaiv tau.

Kauj Ruam 2: Simulation

Kev sim qhia pom tias transistors tsis muaj kev ncaj ncees ntawm ib nrab ntawm qhov hluav taws xob. Kev cuam tshuam cov transistors ntawm ib nrab ntawm qhov hluav taws xob tsis yog qhov tseem ceeb rau qhov kev ua haujlwm no. Rau 1.5 V muab txhua transistors tuaj yeem ua rau ntawm 1 V lossis 0.5 V.

Txo Rf tus nqi qis dua yuav txo cov transistor cov khoom siv hluav taws xob tso tawm los ntawm kev muab ntau dua DC kev tsis ncaj ncees tam sim no rau lub hauv paus transistor.

PSpice software qub tsis muaj lub tshuab hluav taws xob nrov nrov.

Kauj Ruam 3: Ua Circuit Court

Kuv siv 5.6 kohm resistor rau Rc2a hloov 1.5 kohm resistor uas tau qhia hauv Circuit Court. Yuav tsum tsis muaj qhov sib txawv ntau. Txawm li cas los xij, kuv qhov kev sib tw tau nce siab dua thiab qhov siab tshaj plaws qis lim lim (Q2 transistor kuj tseem lim qis). Kuv lub Circuit Court tseem xav tau Rf2 tus tiv thaiv siab dua txhawm rau nce qhov tsis sib xws ntawm cov khoom siv hluav taws xob tso tawm. Txawm li cas los xij, txo cov transistor cov neeg sib cais tam sim no, Ic tuaj yeem txo qis qhov transistor tam sim no nce.

Kuv siv 5.6 kohm resistors rau Rb1, Rb2, Rb3 thiab Rb4. Yuav tsum tsis muaj qhov sib txawv ntau. Kuv lub voj voog tau qis dua.

Rf2 tuaj yeem ua tiav nrog ob lub 270 ohm resistors. Txawm li cas los xij, txhua tus transistors muaj qhov sib txawv tam sim no nce ntxiv uas tuaj yeem kwv yees li ntawm 100 txog 500. Yog li koj xav tau qhov nrhiav qhov tawm tswv yim tawm tsam raug. Qhov no yog vim li cas kuv tau teev tseg qhov sib xyaw ua ke tiv thaiv pob hauv ntu ntu. Koj kuj tseem tuaj yeem siv qhov kev tsis txaus ntseeg ruaj khov lossis kho qhov tsis ncaj ncees transistor Circuit rau lub tshuab hluav taws xob no.

Lub voj voog yuav pib oscillating. Koj tuaj yeem sim siv lub zog lim dej pom hauv kab lus no:

www.instructables.com/id/Transistor-VHF-Amplifier/

(Qhov no yog vim li cas kuv tau teev tseg lub zog siab 100 ohm resistors)

Kauj ruam 4: Kev nkag siab

Koj tuaj yeem pom tias kuv yuav luag tsis tau siv cov hlau txuas thaum ua kuv qhov Circuit.

Koj tseem tuaj yeem pom cov hlau txuas hauv daim duab.

Kauj ruam 5: Xeem

Duab 1:

Channel 1: Vc1

Nplai: 0.5 V thiab 4 Thib Ob

Nco ntsoov tias thawj lub transistor Q1 tso tawm Vc1 tau qhia tias tshuav peb lub transistors ntxiv yuav tsis muaj txiaj ntsig

Duab 2:

Channel 1: Vint1

Channel 2: Vo1

Nplai: 0.5 V thiab 40 Thib Ob

Duab 3:

Channel 1: Vo1

Channel 2: Vo2

Nplai: 0.5 V thiab 40 Thib Ob

Daim duab 4 (Tsis suav nrog Rf2 resistor suav nrog):

Channel 1: Vo1

Channel 2: Vo2

Nplai: 0.5 V thiab 20 vib nas this

Tsis muaj kev tawm tswv yim Rf2 resistor Q2 transistor hauv tsis muaj kev ntxub ntxaug ntawm ib nrab ntawm qhov hluav taws xob. Lub voj voog ua haujlwm nrawm dua, nrog lub sijhawm tsawg dua. Txawm li cas los xij, yam tsis muaj Rf2 lub tshuab hluav taws xob no yog kev pheej hmoo hauv Circuit Court thiab tej zaum yuav tsis ua haujlwm rau txhua hom transistor thiab capacitor.