Hi everyone,
i have a problem with my 12vdc / 220 vac power inverter that a certain moment, not working properly.
Some days ago it is stopped completaly.
I opened it and found a little track broken.
this track carry the 12v to second stage oscillator (TL494). After repaired this track, it started to work again, but now it has few power . From feature it has an 1200w continuous and 2400 w peak power and before this problem it succeeded to supply a refrigerator.
now instead to turn off with an absorption of about 100 w. It does not sound, but it turns off. If i disconnect the load it turns on automatically.
this power inverter have 2 oscillator stages with 2 tl494.
the first stage raise the low voltage (12v) in high voltage through use of four trasformers.
the second stage use h-bridge to generate the vac 220.
the first stage have 8 mosfet irf3205 , while the second stage have 8 mosfet irf740.
you have any ideas about thing i can check?
i have a problem with my 12vdc / 220 vac power inverter that a certain moment, not working properly.
Some days ago it is stopped completaly.
I opened it and found a little track broken.
this track carry the 12v to second stage oscillator (TL494). After repaired this track, it started to work again, but now it has few power . From feature it has an 1200w continuous and 2400 w peak power and before this problem it succeeded to supply a refrigerator.
now instead to turn off with an absorption of about 100 w. It does not sound, but it turns off. If i disconnect the load it turns on automatically.
this power inverter have 2 oscillator stages with 2 tl494.
the first stage raise the low voltage (12v) in high voltage through use of four trasformers.
the second stage use h-bridge to generate the vac 220.
the first stage have 8 mosfet irf3205 , while the second stage have 8 mosfet irf740.
you have any ideas about thing i can check?