Electric railroad AC or D.C. Commander

Not that I know of.  The one with the bridge is the DC version, the one without is the AC version.  The DC Commander just omits the connection to the field, they're based on the same PCB, but have different firmware and of course components that are populated.

The connectors are JST-EH Family and are available at Digikey.

John,

Thank you - Not a bad find for ten dollars...with some k-line mp15 parts...the board works. The connector is burned. I rather change it...

JP2 Jumpers?

Not sure about the jumpers, I have a couple of AC commanders in house, but I don't routinely buy the DC commanders, I install a Cruise Commander if DC is called for.  FWIW, the AC commander has two jumpers installed going across the right hand sets of pins, I suspect they're to jumper the operation for the AC function.  Since the same physical board is used for AC and DC, my guess is these might be jumpering across the missing rectifier for a path for the AC. 

I'd try it with no jumpers if that's what it has now.  Failing that, give Ken at ERR a call, I'm sure he knows.

Here's a picture of a DC Commander.  It has them jumpered the same as the new AC Commanders I have.  It was selling in the for-sale forum, and it represented as new.

Link here: https://ogrforum.com/topic/err-dc-commander

John.

The EH are the white connectors. Looking for the green!

ERR has the Specific AC CDR instructions posted on their web page.  The jumpers are not discussed.  I asked a long time ago and forgot the answer.  It was basically, leave them alone. G

Ok! Like a said...not bad for a 10 dollar junk box find.

Just need to find the green screw down connectors which one is broke. Or desolder the connector and hardware.

You can find those on eBay, they're .1" pitch Euro style terminal blocks.  You might also be able to remove one from a dead board, several styles of boards use those.  I may have a dead board or two with those on it.

Or solder to the pin underneath.  G

gunrunnerjohn posted:

You can find those on eBay, they're .1" pitch Euro style terminal blocks.  You might also be able to remove one from a dead board, several styles of boards use those.  I may have a dead board or two with those on it.

Thanks, John! Been so removed from the electrical engineering stuff since 1988! Lol - Don't even want to open a book! Or these days online. Thanks

Sometimes if you just sleep with the book under your pillow, you get the important stuff.

As for going on-line, I think you do that every time you post.

Lol -last thing I rememer, is the ferrite beads for the gates of the mosfets. 

Early,days of switching power supplies...  one guy use to say "Go get the rosary beads". When we ere losing them to transients.

Anyway, thanks for the pitch size....I ordered them last night off fleabay..

I was a big user of ferrite beads and TVS protection diodes during my aerospace days, trying to eliminate radiated EMI and also kill off any incoming EMI was often the most difficult part of a design.