what is this ic

[esinior]

hi, i have a 220v motor driver and i think it is a dimmer from its bt138 triac (it goes to a 220-24 trans and then to the motor) and its ic surface is erased and expunged and i don't know its number, does anyone know what this could be?

;

[jpanhalt]

That looks like it may be a Chip on board (COB) : https://en.wikipedia.org/wiki/Chip_on_board  Identification marks were not erased.  They were never there.

Your guess is as good as ours.

Edit:  Oops 

[fzabkar]

That looks like it may be a Chip on board (COB) : https://en.wikipedia.org/wiki/Chip_on_board  Identification marks were not erased.  They were never there.

Are you mistaking the knob on the pot for an IC blob?

[BrokenYugo]

Pretty sure the question is about the DIP 16 package with the markings sanded off.

[DrG]

Pretty sure the question is about the DIP 16 package with the markings sanded off.

Agreed. I don't know what it is. The only think I could suggest is that the OP draws out the circuit as everything else is identifiable. Given that you have a decent idea of what it does, someone could certainly speculate what IC would make sense there. Not terribly helpful, I know.

[esinior]

no,it is cleared and sanded

[esinior]

ooooo i didn't notice it, i didn't say that , ic is that 16-pin DIP one

[esinior]

yes, the question is about that

[esinior]

Pretty sure the question is about the DIP 16 package with the markings sanded off.

Agreed. I don't know what it is. The only think I could suggest is that the OP draws out the circuit as everything else is identifiable. Given that you have a decent idea of what it does, someone could certainly speculate what IC would make sense there. Not terribly helpful, I know.

it is a dimmer i think, doesn't anyone have an dimmer design with an ic?

[amyk]

U2010B ? Seems to match the circuit at first glance.

[esinior]

thanks, i'll check that

[inse]

If it was a dimmer - wow!
Not a single piece of filtering or protection around the TRIAC.