Hey there,
I have this Chinese ups/powerbank sold under many diffrent brands and it has been working OK apart form a burnt out mosfet I had to change. After tget it was OK again for a while.
Now when I turn on the AC inverter I get 220v out and it can drive a 10w fan ok.. But when I connect my 60w fan it starts to pulse.. 1 sec on... Then 3 seconds off. I'm not sure where to start fault finding.
The ups gets its pure sine wave from this egs002 module (image attached) and the light on the module keeps blinking in sync with the power going on and off.
I've tested the caps and they all seem to be ok, no shorts on the mosfets/transistors. When connected to mains the device switches and outputs AC fine. And then if I wait.. Or tap it or do a magical dance the battery powered AC will start to work (sometimes)
Any kind of insight would be appreciated
I have this Chinese ups/powerbank sold under many diffrent brands and it has been working OK apart form a burnt out mosfet I had to change. After tget it was OK again for a while.
Now when I turn on the AC inverter I get 220v out and it can drive a 10w fan ok.. But when I connect my 60w fan it starts to pulse.. 1 sec on... Then 3 seconds off. I'm not sure where to start fault finding.
The ups gets its pure sine wave from this egs002 module (image attached) and the light on the module keeps blinking in sync with the power going on and off.
I've tested the caps and they all seem to be ok, no shorts on the mosfets/transistors. When connected to mains the device switches and outputs AC fine. And then if I wait.. Or tap it or do a magical dance the battery powered AC will start to work (sometimes)
Any kind of insight would be appreciated
