The high frequency switch-mode power supply focused by this subject mainly used in galvanoplastics(NDF), electrification(NCF), electrical chemistry(NHF), and excitation(NLF).
The low charging rate in conjunction with acid stratification cause a significant undercharging of the low part of the electrodes,which again causes accelerated sulphation.
To resolve that, wto-order charging circuit is used to reduce the stretching discharge, and dipulse is used to increase the reliability of the idscharge, which can decrease the failure discharge.