Testing Idss of fet and not getting what I hoped for

We use reference designator silkscreens, and manufacturing and test want us to resequence in physical order, and back annotate the schematic and BOM, to make parts easy to find. How is that handled on a hierarchical schematic? Do the reference designators get long?

If we have N channels, they may not be exactly identical. We may place bypasses and terminations here and there. How does a hierarchical structure handle that?

I use Manhattan. This gives a solid ground plane for lower noise, much lower crosstalk, and you can make it as complex as you want. Plus, you can cross wires, and use shielded coax for high speed.

tirsdag den 16. april 2019 kl. 01.33.22 UTC+2 skrev John Larkin:

nsen

rk> >> >> >> >>

ote:

t tolerant of

d values usually

works.

Spice wouldn't run it. It took a few goes looking over it to notice I'd con nected the power rails together via 2 base junctions. Oops. A base-ic error .

g goes to

all sorts of

reference

y ugly

ematics;

l get them

ntry tool

thin

age even if

as I'm

name like

name

horts on

o any

to global

sheet*100, sheet*1000, or just sequential numbers starting from page one

you can change an instance to be a copy and change it however you like, but it'll of course no longer track the other instances

and you will lose the feature that once you have laid out one channel it li terally takes 1 second to replicate the layout for all the channels you hav e

$13 for 100 mislabeled Ebay parts, not much of a bargain. I complained to the seller, and they immediately refunded my money. I later ask Ebay if I was expected to send them back to China, they said if they already refunded your money, then normally they don't expect the part back. Ebay rep, also said it's normally to expensive to send items back to China. Seller said they refunded my money, Ebay said my money was refunded, when my credit card says I have a refund, then I will know for sure. As for the sub, I found the 2sk209 BL has identical specs but in a surface mount package, available as a Toshiba part from Digikey. I can work with that and comfortable I'll get the proper part. You can see this project is on a slow roll, for about 2 years now. Mikek

You can send me those parts, probably better than what you bought in replacement.

That's great to get the board running but supporting the board is going to be a nightmare.

Win, I do have thoughts about running a comparison of the two different fets after I get the amp built. Need to equalize gain, but that shouldn't be difficult. Mikek

Not really. The address remapper is just another step in the build batch file. Of course we fixed the pcb on the next rev.

nsen

rk> >>>>>>>> >>

ote:

t tolerant of

d values usually

works.

Spice wouldn't run it. It took a few goes looking over it to notice I'd con nected the power rails together via 2 base junctions. Oops. A base-ic error .

g goes to

all sorts of

reference

y ugly

ematics;

l get them

ntry tool

thin

age even if

as I'm

name like

name

horts on

o any

ns

out

back in the day we occasionally scrambled address and data to help with layout, it can make programming flash interesting

Another piece of software that has to be controlled and supported. It's not painless and, while it would be a "fix", it would still require a spin, just for that, any place I've worked.