Hi John, thanks for the response.
It's out of a Boumatic pulsator control board out of a dairy .. a 'prism' pulsator.
It has a very basic function, but with lots of added complexity with communications back to the main network controller etc etc
If I were able to find schematics for some of this stuff, I'd feel like I'd hit the jackpot. I'm so used to having to work it all out for myself ... drawing out bits of the circuits to find my way around.
If you hear of anyone who worked for Boumatic, and who have access to some circuits ....
Hi Eric, thanks for your input as well.
Yeah .. despite the small size, it's definitely the correct numbers. I've been able to eyeball two seperate boards with the same IC.
Success ... in the mean time, I've had a response from another forum that I frequent .. and I've been told that it's a National IC .. LM3478
https://www.electro-tech-online.com/custompdfs/2009/05/LM3478.pdf
I've asked how he knew .. but haven't had a reply yet.
The data sheet lists the numbers that I was after ... the thing that amazes me is why they bother to put some dud number on it when there was room for the proper number in the first place.
Any way .. this one is solved .. but stay tuned, I'm always on the look out for some odd bit
Thanks again for your help.
Regards, Wes.