Thibela oscillator: mefuta e, melao-motheo bueloang

Thibela oscillator - e sa boikhathollo pulse length jenereithara e etsa e thehiloeng ho e le ho hodisa elements (mohlala, transistor) le e matla poeletsotlaleho transformer. The hangata ho fetisisa sebelisoa poeletsotlaleho khothatsang.

Le melemo le mathata

molemo oa lijenereithara joalo e nkoa e le e batlang e le bonolo, le matla a ho hokela mojaro ka transformer e. Sebopeho sa linaoa e hlahisoang ke haufi le likhutlo li 'nè, fihla ba likete tse mashome mosebetsi potoloho, bolelele - tse makholo microseconds. The fokotsa pulse length ho pheta-pheta maqhubu a ho fihlela ho makholo a 'maloa kHz. Bokgoni oscillatory lipotoloho ka disebedisweng tse joalo ke tse nyenyane, 'me e ile a etsa hore ke capacitances interturn, ya e le hantle, tlhomamiso bokgoni. Ka lebaka la litšobotsi tsena thibela oscillator ho pharaletseng sebelisoa ka proizvodnje tsa: ka disebediswsa itsamaise, liindasteri le molao oa tsamaiso elektronike.

The bozangi litomba ya lijenereithara tsena ke ho itšetleha ya maqhubu a ea liphetoho tsa phepelo gagamalo. Botsitso ba ya maqhubu a ka tlaase ho feta ea multivibrator ke ba etsang liphesente tse 5-10 feela.

Thibela oscillator, bokella ka tse ntle tsa paterone theiboleng kapa le ea potoloho resonant e tuned ho maqhubu a ya pulse length ho pheta-pheta, ka diode ho notlela, o na le botsitso batlang e le tse phahameng tsa oscillation. Maqhubu botsitso ka merero e joalo, e ka tlaase ho liphesente tse ngoe.

Ho na le merero e ngata bakeng sa ho kenya tshebetsong lijenereithara joalo: lebone transistor le botlaaseng koala transistor le emitter-hammoho, ka letlooa positive, le leruo la sethaleng, FET le tse ling.

Setšoantšong bontša ka emisang oscillator ka FET.

The sesebediswa ratoang ka ho fetisisa o ile a fumana ka transistors tloaelehileng. Ka disebedisweng tse joalo ka tloaelo ho sebelisa pulse length baru. The jenereithara e ka sebetsa ka mokgwa wa e notletsoe, e habonolo tsamaisanang pontšo kantle.

Thibela oscillator, molao-motheo oa ho sebetsa

Tšebetso ea balebeli ba potoloho ba e arotsoe mekhahlelo e 'maloa. Mohato o le mong: notlolla transistor etsahala ha kena pulse length ho emitter ena. sesebediswa e qala ho sebetsa. Ha e le setsi sa transistor fumana hekeng jwale, ho etsa hore qoso bokella le ho eketseha ha ho mokelli oa morao-rao. Ka resistor ke poeletsotlaleho ntle, kenngwa tshebetsong windings ea pulse length transformer excites ea libota na mbonge thulaganyou e kgolo ya botlaaseng, ba maqhubu a 'mokelli le mojaro jwale. Sena decreases le phapang e ka bang teng pakeng tsa emitter le 'mokelli oa transistor ha e fihla lefela, ea unit trust e kena boemong ho tlala. Mohato tse peli: hlokomolohe mathomo matsoelintsoeke ho hanyetsa, re lumela hore kela ke kentse letsoho le DC gagamalo. Ka lebaka leo, ho windings setseng ea transformer gagamalo e boetse ke sa fetohe. Tlhaku maqhubu diphetolo oa potoloho e laolwang ke thepa ya liketane tse amanang letotong le windings ea bobeli, hammoho e le thepa ea transformer liboto. Ka mohlala, hona joale e tla ka linako tsohle legal ohm. Hona joale ka lebaka la ho lula transistor, empa qala ho fokotseha ha lefisa ho capacitor. The mokelli oa morao-rao e laolwang ke chelete ea magnetizing jwale le e fetang windings jwale. The magnetizing eketseha hona joale, khōlo hysteresis sekgoqetsane e laolwang ke mofuta wa lintho tse bonahalang ea mantlha. Ka lebaka leo, eketseha le 'mokelli oa morao-rao. Sena se etsa hore ho transistor tsoa ho tlala, le pulse length tlhōrō e thehoa. The mokelli oa morao-rao e hape itšetlehile ka boholo ba ho tefo botlaaseng, 'me botlaaseng jwale ho libota na mbonge ena qala ho fokotseha. Transistor notletsoe, pulse length karolo e thehoa. Ha ho notlela sesebediswa thibela oscillator qala ho hlaphoheloa boemo ka eona qalong.