Taw qhia rau kev ntsuas zener diodes nrog multimeter
Qhov voltage stabilization tus nqi ntawm cov voltage regulator hlab peb feem ntau siv yog feem ntau ntau dua 1.5V, thiab cov kuj ntau yam hauv qab no R × 1k ntawm lub pointer meter yog powered los ntawm 1.5V roj teeb nyob rau hauv lub 'meter'. Nyob rau hauv txoj kev no, qhov kev tiv thaiv ntau yam hauv qab R × 1k yog siv Kev Ntsuas lub raj Zener zoo ib yam li ntsuas lub diode, nws muaj kev ua tiav ib-txoj kev conductivity. Txawm li cas los xij, R × 10k ntau ntawm lub ntsuas ntsuas ntsuas yog siv los ntawm 9V lossis 15V roj teeb. Thaum siv R × 10k los ntsuas qhov ntsuas hluav taws xob hluav taws xob uas muaj qhov ntsuas hluav taws xob tsawg dua 9V lossis 15V, qhov rov qab ua haujlwm yuav tsis yog ∞, tab sis yuav muaj qee tus nqi. tsis kam, tab sis qhov kev tiv thaiv no tseem muaj ntau dua qhov kev tiv thaiv pem hauv ntej ntawm lub tshuab hluav taws xob hluav taws xob.
Nyob rau hauv txoj kev no, koj tuaj yeem pib kwv yees qhov zoo ntawm qhov voltage regulator raj. Txawm li cas los xij, qhov zoo voltage regulator raj yuav tsum muaj qhov tseeb voltage regulator tus nqi. Yuav ua li cas kwv yees qhov voltage regulator tus nqi nyob rau hauv amateur tej yam kev mob? Nws tsis yooj yim, tsuas yog nrhiav ib qho analog saib.
Txoj kev yog: thawj zaug muab ib lub 'meter' nyob rau hauv R × 10k txoj hauj lwm, thiab txuas nws cov dub thiab liab xeem ua rau lub cathode thiab anode ntawm lub voltage regulator raj feem. Lub sijhawm no, lub xeev ua haujlwm tiag tiag ntawm lub tshuab hluav taws xob hluav taws xob yog simulated, thiab tom qab ntawd coj lwm lub 'meter' thiab muab tso rau hauv R × 10k txoj haujlwm. Nyob rau theem voltage V × 10V lossis V × 50V (raws li tus nqi voltage regulator), txuas cov liab thiab dub xeem ua rau cov dub thiab liab xeem coj ntawm lub moos tam sim no. Tus nqi hluav taws xob ntsuas nyob rau lub sijhawm no yog qhov tseem ceeb no Qhov voltage stabilization tus nqi ntawm qhov voltage regulator raj.
Kuv hais tias "tseem ceeb" vim hais tias qhov kev tsis ncaj ncees tam sim no ntawm qhov hluav taws xob tswj lub raj ntawm thawj lub 'meter' yog me ntsis me dua qhov kev tsis ncaj ncees tam sim no thaum siv ib txwm siv, yog li ntsuas qhov ntsuas hluav taws xob ntsuas tus nqi yuav loj dua me ntsis, tab sis qhov sib txawv ntawm qhov pib tsis loj. . Txoj kev no tsuas tuaj yeem kwv yees qhov voltage regulator raj uas nws qhov voltage regulator tus nqi tsawg dua qhov voltage ntawm high-voltage roj teeb ntawm lub pointer meter. Yog hais tias qhov voltage stabilization tus nqi ntawm lub voltage regulator tube yog siab dhau lawm, nws tsuas yog yuav tsum tau ntsuas nrog ib tug sab nraud fais fab mov (los ntawm no taw tes ntawm view, thaum peb xaiv ib tug pointer meter, nws yog tsim nyog los siv ib tug high-voltage roj teeb. voltage ntawm 15V tshaj 9V ib qho).
