APS output

[Alimash]

Hi
The output of the attached automatic power supply is not normal
I know it is not a pure sine wave inverter but:
1-Shouldn't the output be square wave; it is really distorted.
2-if there is a problem, how I can fix it

I have a background in electronics and I am using hantek pc oscilloscope for measuring.

[petehall347]

looks home brew to me

[CapLeaker]

It’s a lead acid battery charger.

[Alimash]

looks home brew to me

Kind of

[Alimash]

It’s a lead acid battery charger.

it does charge a lead acid battery but it also convert DC to AC

[CapLeaker]

That’s an awful bad AC wave.

[petehall347]

will it light an incandescent lamp ?

[Alimash]

That's an awful bad AC wave.

I agree, what is the problem?
The mosfets, the driver??
I'm also considering this to be a badcaps case?

[Alimash]

will it light an incandescent lamp ?

yes, but it start buzzing when connecting any non resistive load like my hot air station for example which is rated about 400 watts i think.