Kev tsav tsheb hauv Circuit Court yog tus yuam sij rau kev ua haujlwm ntawm PMDC Motor. Yog li ntawd, txhawm rau txhawm rau ua haujlwm ntawm cov cuab yeej siv, tus neeg siv yuav tsum nkag siab txog kev tsav tsheb ntawm cov khoom siv kom ntxaws, kom tsis txhob ua haujlwm yuam kev thiab cuam tshuam rau kev ua haujlwm ntawm cov khoom siv.
Lub tshuab hluav taws xob qis ntawm DC lub cev muaj zog tuaj yeem siv H-bridge hloov hluav taws xob. UA thiab UB yog kev sib txuas ua ke dual-synthetic lossis ib leeg-synthetic tsav teeb liab, TTL qib. Qhov kev tiv thaiv hluav taws xob ntawm qhov hloov pauv hloov pauv yuav tsum siab dua 1.5 npaug ntawm peb. Vim tias lub zog siab PNP transistors yog kim thiab nyuaj rau kev siv, qhov Circuit Court no tsuas yog siv rau hauv cov tsav tsheb uas tsis muaj zog. Thaum tag nrho plaub lub zog hloov pauv siv NPN transistors, ob qho yuav tsum tau daws. Lub hauv paus thiab theem hloov teeb meem ntawm sab sauv-sab transistors (BG1 thiab BG3), H-bridge hloov hluav taws xob siv ob lub transistors kom ua tiav qib hloov ntawm sab sauv-sab transistor, tab sis qhov poob ntawm cov resistor R yog loj, yog li nws tsuas yog siv tau rau hauv lub zog me me tsav tsav.
Thaum lub zog tsav tsheb loj heev, qhov dav dav choj caj npab voltage kuj tseem siab. Piv txwv li, ncaj qha coj lub hwj chim zaus voltage, ib theem 220V, los yog peb-theem 380V. Rau kev nyab xeeb thiab kev ntseeg siab, nws cia siab tias qhov tsav Circuit Court (main circuit) yog insulated los ntawm kev tswj Circuit Court. , Lub ntsiab Circuit Court yuav tsum tau txais lub floating pre-tsav tsheb. Lub floating pre-drive circuits yog ywj siab ntawm ib leeg thiab siv los ntawm cov khoom siv hluav taws xob ywj pheej. Vim lub photoelectric coupling siv nyob rau hauv lub pre-tsav Circuit Court, lub teeb liab tswj yog hluav taws xob rwb thaiv tsev los ntawm lub pre-tsav Circuit Court, yog li cov tswj teeb liab yog ntab (los yog tsis nyob rau hauv ntau) mus rau lub ntsiab Circuit Court.
Cov saum toj no yog cov kev taw qhia rau tsav Circuit Court ntawm cov hlau nplaum ruaj khov DC lub cev muaj zog, raws li.