Qhov kho rau qhov kub thiab txias ntawm hluav taws xob soldering hlau qhov ntsuas kub tsis tau
Ib qho tsis ua hauj lwm nrog cov thermostatic soldering hlau yog qhov kub thiab txias, uas ua rau overheating ntawm cov hlau soldering. 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 kuj yog ib qho yooj yim rau hlawv tawm hluav taws xob Cheebtsam. Thaum cov hluav taws xob soldering hlau ua haujlwm ntawm qhov kub siab ntev ntev, nws kuj yog ib qho yooj yim los ua kev puas tsuaj rau nws cov hluav taws xob sab hauv, ua rau tsis muaj kev tswj xyuas tas li lossis txawm tias siv tsis tau. Thaum lub sij hawm soj ntsuam txhaum, nws yuav pom tias zawv zawg sib cuag ntawm qhov kub thiab txias regulating resistor R2 yog oxidized thiab muaj kev sib cuag tsis zoo, uas yog sib npaug rau qhov kub thiab txias tau hloov mus rau qhov siab tshaj plaws, yog li qhov kub ntawm cov hlau soldering yog siab dhau. . Muaj ob qho laj thawj tseem ceeb: ib qho yog tias thaum lub tshuab hluav taws xob hluav taws xob ua haujlwm, ib feem ntawm cov cua sov tau xa mus rau tus tuav 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; Qhov thib ob yog qhov tam sim no-limiting resistor R1 nyob rau hauv lub rectifier lim Circuit Court dissipates tshav kub, uas ua rau qhov kub thiab txias ntawm lub Circuit Court ua hauj lwm ib puag ncig nce thiab yooj yim ua rau lub movable hu ntawm R2 mus oxidize.
Txhawm rau tiv thaiv qhov tsis ua haujlwm no, ob txoj hauv kev hauv qab no ntawm kev hloov kho lub voj voog raug npaj
(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 ib qho ruaj khov resistor.
(2) Kev hloov pauv ntawm lub voj voog rectifier: cov qauv hauv Circuit Court yog qhia hauv daim duab 3.
Hloov R1 nrog C (C≈0.12μF), thiab txuas lub diode D1 nyob rau tib lub sijhawm.
