Lub tshuab hluav taws xob siab: kev saib xyuas, nta, hom thiab yam ntxwv

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Lub hom phiaj tseem ceeb ntawm lub tshuab hluav taws xob siab yog tias nws tsim oscillations ntawm hluav taws xob teb. Qhov ntau ntawm cov kev hloov pauv no muaj qhov txwv dav dav: los ntawm ntau kaum ntawm kilohertz mus rau pua pua megahertz.

piav qhia dav dav ntawm RF ntaus ntawv

Cov neeg zoo tib yam siv cov cuab yeej no los nres lub txee. Lub tshuab hluav taws xob ntau zaus muaj peev xwm nres qhov kev ua haujlwm ntawm cov cuab yeej zoo li no, tsim cov oscillations. Tsis tas li ntawd, cov khoom siv no kuj tseem siv tau los ua lub zog rau cov khoom siv hauv tsev. Yog hais tias peb tham txog lub hwj chim, ces cov zis voltage mus txog 220 A, thiab lub hwj chim yog 1 kW. Nws tseem tuaj yeem hloov qee cov ntsiab lus nrog cov muaj zog dua. Yog tias qhov no ua tiav, cov txiaj ntsig zoo ntawm lub tshuab hluav taws xob ntau zaus yuav nce, thiab nrog nws cov kev pab nws yuav muaj peev xwm ua kom muaj zog ntau dua lossis ntau dua, tab sis muaj zog dua. Kev sib txuas ntawm HF nws tus kheej yog nqa tawm mus rau ib lub tsev neeg tsis tu ncua. Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov ntawm no tias daim duab kab hluav taws xob yog qhov yooj yim heev, thiab tsis muaj qhov hloov pauv hauv txhua txoj kev. Tsis tas li ntawd, tsis tas yuav siv lub tshuab hauv av rau qhov no.ntaus ntawv. Thaum xws li oscillatory units tau txuas nrog lub network, lawv tsis ua tiav kev ua haujlwm ntawm lub ntsuas. Chav tsev tseem ua haujlwm, tab sis tsuas yog 25% ntawm qhov kev siv hluav taws xob tiag tiag raug kaw.

Instrument action

Yog tias koj saib hauv kev nthuav dav ntxiv ntawm kev ua haujlwm ntawm lub tshuab hluav taws xob siab, ces cov khoom siv nres vim qhov tseeb tias lub capacitor siv rau hauv cov khoom siv hluav taws xob. Kev sib txuas yog ua tiav rau qhov no, uas muaj cov nqi them tag nrho nrog rau qhov sinusoid ntawm qhov voltage ntws hauv lub network. Qhov kev siv ntawm tus nqi no tshwm sim los ntawm kev siv pulses nrog lub siab zaus. Yog li, nws hloov tawm tias qhov tam sim no uas cov neeg siv khoom siv los ntawm nws lub tsev network dhau los ua cov mem tes siab. Ib qho yooj yim hluav taws xob ntsuas hluav taws xob tau teeb tsa hauv tsev yog tus cwj pwm los ntawm qhov tsis muaj kev nkag siab zoo rau qhov kev hloov pauv. Qhov no txhais tau hais tias chav tsev yuav coj mus rau hauv tus account qhov kev noj tam sim no ntawm daim ntawv pulsed nrog qhov yuam kev tsis zoo.

Scheme Description

Lub tshuab hluav taws xob muaj hluav taws xob ntau zaus yog tus cwj pwm los ntawm kev muaj qee yam tseem ceeb. Cov no muaj xws li: rectifier, capacitance, transistor. Tsis tas li ntawd, yog tias peb tham txog kev sib txuas ntawm lub capacitor, ces nws txuas nrog hauv series rau hauv Circuit Court nrog lub rectifier. Qhov no yog qhov tsim nyog kom thaum lub rectifier ua haujlwm ntawm lub transistor, lub capacitor tuaj yeem them mus txog qhov voltage uas muaj nyob rau hauv lub network.

Feem ntau qhov kev txwv ntawm kev them tus nqi capacitor hauvhigh-frequency generator ua 2 kHz. Yog hais tias peb tham txog qhov voltage uas tam sim no tam sim no nyob rau hauv lub load thiab capacitance ntawm lub ntaus ntawv, ces nws mus txog ib tug sine ntawm 220 V. Nyob rau hauv thiaj li yuav txwv tsis pub lub tam sim no ntws los ntawm lub transistor thaum lub capacitance yog them, lub Circuit Court muaj ib tug resistor. yog txuas nrog qhov tseem ceeb cascade siv qhov sib txuas sib txuas.

Ntawm HF kev ua tau zoo

Lub tshuab hluav taws xob raug tua tag nrho ntawm cov ntsiab lus kev xav. Nws tsim oscillations los yog pulses nrog ib zaus ntawm 2 kHz, nrog rau ib tug amplitude ntawm 5 volts. Kuj tseem muaj cov yam ntxwv zoo li lub teeb liab zaus. Tus nqi ntawm qhov ntsuas no yog txiav txim los ntawm cov ntsiab lus C2 thiab R7. Hauv cov txheej txheem sau npe, hom ntawv kos npe no yog siv. Cov khoom uas cov ntsiab lus muab tau tuaj yeem siv los kho qhov yuam kev siab tshaj plaws hauv kev suav nyiaj rau kev siv hluav taws xob. Rau kev tsim cov pulses, cov ntsiab lus xws li T2 thiab T3 yog lub luag haujlwm - transistors. Ua ke lawv hu ua tus tsim impulse. Qhov no kuj yog lub luag haujlwm rau kev ua haujlwm raug ntawm transistor T1.

Cov khoom siv xws li lub tshuab hloov pauv, hloov pauv thiab lwm yam yog siv los ua lub zog me me. Lub luag haujlwm tseem ceeb yog muab lub zog rau kev ua haujlwm ntawm microcircuit nrog rau lwm cov khoom. Cov khoom siv hluav taws xob me no feem ntau yog ntsuas ntawm 36V.

High frequency signal generator G4-151

Lub hom phiaj tseem ceeb ntawm lub tshuab hluav taws xob zoo li no yog teeb tsa, tshuaj xyuas, kho thiabkuaj cov khoom siv hluav taws xob engineering. Siv cov cuab yeej no, koj tuaj yeem ntsuas qhov amplitude-frequency yam ntxwv, rhiab heev, xaiv, thiab lwm yam. Tsis tas li ntawd, cov cuab yeej no tseem tuaj yeem siv los ua lub teeb liab uas ua haujlwm nrog ntau txoj hauv kev oscillation modulation. Nws tuaj yeem yog amplitude, zaus lossis pulse modulation. Nws kuj tseem tuaj yeem tsim cov oscillations uas tsis muaj kev hloov pauv. Feem ntau, cov cuab yeej siv no yog siv rau hauv lub cev calibration, hauv khw kho khoom, hauv kev cob qhia lossis chaw kuaj mob.

Cov ntaub ntawv tso tawm los ntawm lub tshuab hluav taws xob ntau zaus no yog cov lej digital zoo tib yam. Tsis tas li ntawd, txhawm rau tswj tau yooj yim, muaj cov khoom siv analog uas tso cai rau koj los tswj hwm txhua qhov tsis zoo ntawm lub cuab yeej.

Handmade los ua ke

Txij li thaum nws tuaj yeem nyuaj rau kev sib sau ua ke lub tshuab hluav taws xob muaj zog tiag tiag nrog koj tus kheej tes, muaj qee qhov kev xaiv yooj yim sib dhos. Nyob rau hauv cov ntaub ntawv no, es tsis txhob ntawm ib tug transistor, ib tug lub caij nrog tsis zoo kuj yuav siv nyob rau hauv lub Circuit Court. Tseem muaj cov ntsiab lus no feem ntau hu ua amplifying. Hauv cov ntsiab lus yooj yim heev, qhov tam sim no ntawm qhov tso zis ntawm cov khoom siv no ib txwm muaj ntau dua li qhov tam sim no ntawm lawv cov tswv yim.

Ib lub voj voog oscillatory txuas nrog lub tswv yim ntawm cov cuab yeej zoo li no. Tsis tas li ntawd, nws yog ib qho tseem ceeb heev los ntawm cov zis ntawm tib lub amplifier los ntawm kev tawm tswv yim nws yog ib qho tsim nyog los txuas nws mus rau tib lub oscillatory circuit. Los ntawm kev sib txuas ntawm Circuit Court hauv txoj kev no, koj yuav tau txais cov txiaj ntsig hauv qab no. Cov tswv yim tau txais tam sim no ntawm ib qho nqi,dhau los ntawm lub amplifying caij, nws nce, uas pub lub voj capacitor. Nrog kev pab los ntawm kev tawm tswv yim, qhov tam sim no amplified rov qab mus rau lub tswv yim rau hauv Circuit Court, qhov twg nws yog dua amplified. Txoj kev ncig no mus txhua lub sijhawm. Nws yog nws tus uas ua rau tsis muaj kev cuam tshuam oscillations hauv lub tshuab hluav taws xob.

Tube tweeter

Ib qho ntawm ntau yam ntawm cov teeb liab ntau zaus yog cov khoom siv raj. Cov khoom siv zoo li no yog siv kom tau txais cov ntshav plasma nrog rau qhov tsis xav tau. Txhawm rau ua qhov no, koj yuav tsum nqa qee qhov tso tawm rau lub zog ntawm lub cuab yeej. Rau cov khoom siv zoo li no, cov ntsiab lus tseem ceeb yog cov emitters, kev ua haujlwm ntawm cov khoom siv raws li lub hauv paus ntsiab lus ntawm kev siv fais fab.

Lwm qhov tseem ceeb rau kev ua haujlwm ntawm lub raj HF yog lub zog amplifiers. Cov khoom no, mounted rau ntawm lub teeb, yog siv los hloov tam sim no ncaj qha mus rau alternating tam sim no. Lawm, kev ua haujlwm ntawm lub tshuab hluav taws xob teeb yog ua tsis tau yam tsis muaj lub teeb nws tus kheej. Ntau yam khoom siv tau. GU-92A tetrode tau dhau los ua ntau yam. Qhov no yog lub tshuab nqus tsev vacuum uas siv plaub yam: anode, cathode, shielding thiab tswj daim phiaj.