Output voltage is unsteady of BPlus Series pure sine wave inverter 12V 220V 300W


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


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

Fault Causes

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.