Qhov tsis sib xws weld me ntsis ntawm lub capacitor tawm qhov chaw vuam tshuab yog tshwm sim los ntawm kev hnav hauv zos ntawm cov vuam electrodes lossis qhov tsis sib xws hauv cov pwm vuam. Leveling los yog kho cov electrodes yuav daws tau qhov teeb meem no. Lub ntsiab tseem ceeb uas yuav tsum tau xav txog thaum kho qhov chaw vuam tshuab yog vuam tam sim no, vuam lub sij hawm, thiab vuam roj siab. Hloov ib qho ntawm cov no yuav cuam tshuam rau qhov vuam, thiab qhov hloov pauv, hloov ib qho yuav hloov qhov vuam nyhuv. Sim maj mam kho cov kev txwv kom haum rau koj cov khoom; Kev hloov pauv nce thiab nqis yuav pab koj kho lub tshuab kom raug.
Lub hauv paus ntsiab lus ntawm lub capacitor paug qhov chaw vuam tshuab: Lub tshuab yuav tsum muaj ob pawg ntawm thyristors txuas nrog rau tib lub sijhawm. Thaum lub teeb liab xa mus rau thyristor A, nws ua, ua rau cov zis tam sim no. Nias lub pedal dua ua thyristor B, tso zis tam sim no. Cov xovxwm tom ntej no qhib thyristor A, thiab lub voj voog no txuas ntxiv mus.