Kev daws qhov kub tsis tas li ntawm qhov kub thiab txias soldering irons
Qhov kub thiab txias tsis tu ncua siv lub siab kub Curie kub sawb-zoo li PTC qhov kub thiab txias cua sov lub caij thiab yog nruab nrog lub fastening thermal conductive qauv. Nws yog tus cwj pwm los ntawm kev ua tau zoo tshaj plaws rau cov tsoos hluav taws xob cua sov cua sov hlau soldering hlau cores, nrog cua kub ceev, txuag hluav taws xob, kev lag luam txhim khu kev qha, lub neej ntev thiab tus nqi qis. Nws tuaj yeem siv rau hauv thaj chaw nrog lub zog qis PTC cua sov tub ntxhais, uas yooj yim rau kev saib xyuas haujlwm.
Ib qho tsis ua hauj lwm ntawm qhov kub thiab txias tsis tu ncua yog tias qhov ntsuas kub tsis muaj kev tswj hwm, uas ua rau qhov kub ntawm cov hlau soldering siab dhau lawm. Ntawm qhov tod tes, nws ua rau kub-kub oxidation ntawm soldering hlau taub (lub solder kuj oxidized tib lub sij hawm); ntawm qhov tod tes, soldering ntawm qhov kub thiab txias tuaj yeem hlawv cov khoom hluav taws xob tau yooj yim. Thaum cov hlau soldering ua haujlwm ntawm qhov kub siab ntev ntev, nws tuaj yeem ua rau muaj kev puas tsuaj rau nws cov hluav taws xob sab hauv, ua rau nws tsis tuaj yeem tswj tau los yog siv tsis tau. Thaum lub sij hawm kev soj ntsuam txhaum, nws yuav pom tias zawv zawg sib cuag ntawm qhov kub thiab txias regulating resistor R2 yog oxidized thiab ua rau tsis zoo kev sib cuag. Qhov no yog sib npaug rau qhov kub thiab txias tau hloov mus rau qhov siab tshaj qhov txwv, yog li qhov kub ntawm cov hlau soldering yog siab dhau. Muaj ob qho laj thawj tseem ceeb: Ua ntej, thaum lub vuam hlau ua haujlwm, nws hloov ib feem ntawm cov cua sov mus rau qhov kov ntawm cov hlau soldering (built-in circuit), uas ua rau qhov kub thiab txias ntawm qhov chaw ua haujlwm. Tom qab ib lub sij hawm, nws yog ib qho yooj yim uas yuav ua rau lub movable hu rau R2 oxidize; Thib ob, tam sim no limiting resistor R1 nyob rau hauv lub rectifier thiab lim circuit dissipates tshav kub, ua rau lub Circuit Court ua hauj lwm ib puag ncig kub nce, uas kuj yooj yim ua rau oxidation ntawm kev sib cuag ntawm R2.
Txhawm rau tiv thaiv qhov tsis ua haujlwm zoo li no tshwm sim, ob txoj hauv kev hauv qab no ntawm kev hloov kho lub voj voog raug npaj rau siv.
(1) Hloov kho qhov hloov kho R2 nrog lub zog ruaj khov: ua ntej kho R2 kom qhov kub ntawm cov hlau soldering ncav cuag qhov ntsuas kub zoo rau kev siv ib txwm, tom qab ntawd ntsuas tus nqi ntawm R2 thiab hloov nws nrog cov khoom ruaj khov.
Hloov R1 nrog C (C≈0.12μF), thiab txuas lub diode D1 nyob rau tib lub sijhawm. (2) Hloov lub voj voog rectifier: Cov qauv hauv Circuit Court yog qhia hauv daim duab 3.
