Stupid stupid stupid :(

[azekeil]

Argh! I blew up some electronics in the project I was working on. I did it in a particularly dumb way. I'm kicking myself, and wondering if I can just exchange one voltage regulator for another. I suppose I ought to do some web searches to see if I can get the specs on the one I blew and the replacement one (the only one) from Maplin I got today.

Comments

[chocojon.livejournal.com]

What was the electronics project? I *may* have some bits round here.

[azekeil.livejournal.com]

Er, it was the project. I have a replacement voltage regulator, but I've no idea if it will do to replace the other one.

[stuartl.livejournal.com]

Can you describe/photo/identify the regulator that went?

I can use my limited knowledge and my fathers seemingly limitless knowledge to identify possible replacements.

[azekeil.livejournal.com]

It seems to be a voltage regulator, or so I'm informed. It's a black rectangular component, about 1cm wide by 2cm long. It's about 4mm thick for the first part where the five legs are attached, then it goes to half that thickness where there's a hole for screwing it to a heatsink one presumes.

I tried a random replacement from Maplins but it didn't do anything.

The marks on the component are SK 8051S. I've found a Swindon electronics component place that purports to stock the part, so I will ring them tomorrow and check it is what I think it is. I will then order it and chance that it will do the job - fingers crossed!

If not, I will fork out £100 for another TFT - this time a 14" one (more suitable) that PC World (Cribbs) are selling off as old stock.

[stuartl.livejournal.com]

It seems to be a switching voltage regulator but I'm having extreme difficulty finding datasheet info for it. It might be the same beast as a SI-8050S but I'm not sure.

It's made by Sanken Electric. It's a 5 volt 3A device and you may find that other manufacturers components will work in its place but probably won't be a drop in replacement. Looking at the application diagrams it should be relatively easy to adapt any single component switching regulator into the circuit but of course it'd be much better to get a drop in replacement.

I have a PDF on the SI-8050S which makes a lot of sense and I could see how it might be an equivalent part. It's also currently made, which the 8051s isn't.