Đang tải... (xem toàn văn)
NGHIEN CUU & UNG DUNG CHE TAO VA Sir DUNG THIET Bj THi NGHIEM CAM ONG DIEN TlT CO SUf DUNG MdT Sd 80 PHAN CUA BEP Tir TBONG DAY HOC VAT LJ11 Ddo Thj Thu Tlido, Hoc vien cao hpc BHSP H& N$i PGS TS Nguy[.]
NGHIEN CUU & UNG DUNG CHE TAO VA Sir DUNG THIET Bj THi NGHIEM CAM ONG DIEN TlT CO SUf DUNG MdT Sd PHAN CUA BEP Tir TBONG DAY HOC VAT LJ11 Ddo Thj Thu Tlido, Hoc vien cao hpc - BHSP H& N$i PGS.TS Nguyen Manh Thio - BHSP HdNpi SUMMARY This paper presents the manufacture and use ofthe laboratoy equipment that use the shacklefrom part of the induction cooker to verify) the change of electric power magnitude size when the induction at wirefame.lfie coils,the area of wire loop and the angle alpha change in grade 11th physics teaching Keywords: The induction cooker, grade 11th physics, electromagnetic induction Ngdy nh^n bdi: 5/10/2015; Ngdy duyft ddng: 15/10/2015 l.fi$t vdnde Ci Idp hpc sinh dd dupc hpc ve hifn tupng cdm ftng difn tft vd da biet: so dudng sfic tft xuyln qua tiet difn cupn day dan biln thiln thi cuOn day xuat hifn ddng difn cdm ftng (DDClT) Bk di Idi kit lugn ndy hgc sinh dd liln hanh hai thi nghifm ve sy xuat hifn DDCU cupn ddy cd sy chuyen dOng tuang doi gifta nam cham vTnh cim vd cuOn ddy, vd ddng ngdt mgch difn cfia mOt nam chdm difn dupe d$t ndm yln trude cuOn ddy Din ldp 11, nghien cfiu hifn tupng cdm fing difn tft, hai TN trln khdng nin liln hdnh lgi md cdn ddnh thdi gian de tien hdnh cde thi nghifm khdc nhdm kilra nghifm vi sy xudt hifn ddng difn edm fing mgch fing vdi Iftng cdch ldm biln dli tft thdng qua mgch gidi hgn bdi mgch difn Dya vdo bilu thftc tinh tft thdng d> = A'.ff.5.cosa Cdn tiln hdnh cdcJ J kiem nghifm vj^y xudt hifn ^^^^Hinh I: hinh dnh ve gong tu cua bip tw 12 • TAP CHl THI^BIGIAO DUC-sd 123-11/2015 cdmftngtren khung day dan dO ldn cfia cdm img tft B tgi cdc dilm trln khung ddy thay dli, s5 vdng N Ihay ddi, till difn khung dfiy ho$c gdc a thay dli Trudc thyc trgng TBTN nhu tren, chfing toi (ta nghiln cftu, chl tgo TBTN ve hifn tugng cdm ung difn tft cho phep kiim ehung vi sy Ihay doi dp ldn ddng difn cdm ftng dp Idn cfta edm ftng tfi £ tgi ede diim Irln khung day thay dli, s6 vdng ddy N thay doi, tilt difn khung ddy ho^lc gdc a thay doi Thiet ki, che tgo b$ thf nghifm vl bifn tupng cdm ftng difn tix 2.1.Thlit bf thl nghidm chdng tSi chi bao gim cdc bp ph^n chinh nhu sau: Mdy phdt tan sl cao: 000 kHz^ 30.000 kHz, bip tft NGHIEN cuu SilNG DUNG + Cac vdng ddy dupc quan bin dSy dlr^ (cd Idp cdch difn) cd s6 vdng vd bdn kinh khac (dudng kinh cfta spi day ding Id 0.5mm) -D$c diem tft truong gdng tft cua bep tft tgo ra: cung cap difn tft may phdt tan so eao (dgng xung vudng vd ddng khdng doi), ddng difn di qua gdng tft sinh tft trudng d tan so cao, cd dp Idn khdng doi ^ 2.2 Cdc ihl nghifm dugc tiin hdnh vdi bP thi nghidm a Sft dyng TBTN dl kiem nghifm vi sy thay doi dO ldn DDCU dO ldn cdm fing tft B khong doi ^ Dg ldn cdm ftng tu B tgi tiit difn khung day thay doi bdng each djch chuyin tinh tien khung day Kit qua: Khi cho khung ddy lgi gdn th! den sang hon vd ngupc Igi cho khung ddy xa thl din sdng kim hem b Sft dyng TBTN dl kiim nghif ve sy thay doi dO Idn DDCU cua khung ddy sinh tilt difn S cfia khung ddy thay doi Sft dyng cdc khung day cd cimg s6 vdng nhung bdn kfnh khdc Kit qud: Quan sdt dO sdng cua den till difn S cfia khung ddy thay doi thl cudng dO sdng cfia den thay doi ti If vdi dO ldn cfia S cu$n ddy ^ c Sft dyng TBTN dl kilm nghifm vl sy Ihay doi dp I(5TI D D C U cfia khung dSy sinh sl vdng ddy N cfta khung ddy thay dli Sft dyng cdc khung day cd cfing ban kinh nhung sl vdng khdc Kel qud: DO sang eua den phy thupc vdo so vdng ddy cfia khung ddy Khi sl vdng ddy tdng thl din sdng hon vd ngupc lgi d Su dyng TBTN dl kiem n^ifm vl sy thay doi dO ldn DDC U cfia khung day sinh gdc a thay dli Sft dyng cdc khung day cd cfing sd vdng, bdn kinh nhung vdi cdc gdc o khdc Ket qud: dp sdng eua din phy thuOc vdo gdc a Din sdng nhdt a = Q° vd dO sdng gidm ddn tdng gdc a Ket lu^n Ti^ Iheo ylu cdu va phuong phdp gidng dgy, bp thi nghifm tren cd thl ldm thl nghifm bilu dien cfia gido viln ho^c Id thi nghifm Ihyc l§p cfia hpc sinh Irong kien thftc hifn tugng cdm fitig difn tft Ngodi cung dftng thi nghifm ndy eho hpe sinh tham gia xay Hinh 4: Ket qud thu dugc tien hdnh TN vdi gdc dyng kiln thftc djnh Iu4l Len-xo ve chieu ddng difn cdm ftng mOt each tieh cyc Nlu sft dyng TBTN dl hpc sinh ly kilm nghifm s5 gdp phan ndng cao ndng lyc sft dyng TBTN, phat huy tinh tich cyc vd sang tgo cfia hgc sinh qud trinh hgc t^p Tii lifu tham khao Bp Gido dye vd Ddo tgo, Danh myc thiit bi dgy hgc tdi Ihieu cdp Trung hgc phd thdng Thdng lu sl01/20l0nT-BGDDTngdy 18/11/2010 BO Gido dye va Ddo Igo, Vgtlill, ndra 20012 TAP CHf THift B| GlAO DMC - Sd 123 -11/2015 " ... Trung hgc phd thdng Thdng lu sl01/20l0nT-BGDDTngdy 18 /11/ 2010 BO Gido dye va Ddo Igo, Vgtlill, ndra 20012 TAP CHf THift B| GlAO DMC - Sd 123 -11/ 2015 "