Output voltage is unsteady of BPlus Series 300W inverter

Output voltage is unsteady of BPlus Series 300W inverter

Model

BPlus series pure sine wave inverter  300W 12VDC 220VAC


Description

The inverter can be started up but its output voltage is unsteady.


Analysis of the possibility of the cause

R18 resistance in bus voltage has been damaged, the transient current is too large so the back end shortcircuits.


Solutions and steps:

Change R18 resistance.