Working on a KBDBABEL...

[arfink]

So I'm making a parts list for my KBDBABEL adapter for XT to PS2, and I have run across one thing with which I am not familiar. It's symbolically represented on the schematic as a black-filled rectangle with labels like L1, L2, etc. and has the value 47u printed next to it. What kind of component it that? Can't seem to find it anywhere.

[arfink]

Right. I just noticed it has to be that from his prototype pics. He uses the wrong symbol in all his diagrams. Silly kbdbabel.

Well, on to the parts ordering. I might get enough for 2 and sell the other... if anyone is interested, that is.

[kode]

I have a set of parts for that mod too, I really should've gotten started with it sooner, but now it will have to wait until my arm is healed. Will have to see about etching a board too, as well as borrow a programmer for the pic.

[arfink]

Well, the board could be made on vero-board, instead of making a special PCB.

[kode]

Yeah, but that's about the same amount of work, really, only with less learned and more annoying connect the spots.

[arfink]

I don't understand the part about less learned, but I do agree it's slightly more annoying to wire. I would find it more annoying to be messing with making a PCB though, but some people have the ability to more easily make a PCB than I do.

[keyb_gr]

Incidentally, he doesn't use "wrong" symbols. These are just the European ones, as you can also tell from the resistors.

[kode]

I, as a european, was a bit confused over them too at first, though. I'm not sure it's the IEC standard.

[keyb_gr]

The relevant standards seem to be DIN EN 60617 / ISO 60617, -4 in particular. Looked things up, and it seems the solid filled inductor symbol is deprecated in favor of the "4 arcs" one nowadays. Didn't know that.