Author Topic: Keep alive for a Bachmann 36-558A decoder  (Read 782 times)

0 Members and 1 Guest are viewing this topic.

rva1945

  • Crew
  • *
  • Posts: 34
  • Respect: +8
Keep alive for a Bachmann 36-558A decoder
« on: December 19, 2017, 12:08:15 PM »
0
Hi:

This 2-8-0 loco stalled on almost every frog. So I added a keep alive, it is located inside the luggage car and wired to the decoder which is installed inside the tender. With "just" 30000uF, the results are positive, it runs very smoothly.

It was relatively easy to find the rectifier bridge in the decoder, though soldering was another story:
[ Guests cannot view attachments ]
(yes it is just 13mm long)
[ Guests cannot view attachments ]

Then after soldering the other 4 wires (rail pick ups and motor) I insulated everything with epoxy.

The 3 10000uF capacitors, wired in parallel and with the mandatory resistor and diode are located inside the carriage car:
[ Guests cannot view attachments ]
[ Guests cannot view attachments ]

Keep alive devices are hard (and expensive) here, but this home made one seems to do the job:

/>
« Last Edit: December 19, 2017, 12:10:42 PM by rva1945 »

MK

  • Crew
  • *
  • Posts: 3969
  • Respect: +720
Re: Keep alive for a Bachmann 36-558A decoder
« Reply #1 on: December 19, 2017, 03:41:11 PM »
0
Are those big caps or are you happy to see me?   :o

rva1945

  • Crew
  • *
  • Posts: 34
  • Respect: +8
Re: Keep alive for a Bachmann 36-558A decoder
« Reply #2 on: December 19, 2017, 05:41:14 PM »
0
?

peteski

  • Crew
  • *
  • Posts: 31881
  • Gender: Male
  • Honorary Resident Curmudgeon
  • Respect: +4625
    • Coming (not so) soon...
Re: Keep alive for a Bachmann 36-558A decoder
« Reply #3 on: December 19, 2017, 05:57:03 PM »
0
?

It is a silly American joke based on a line from an old movie.  As an immigrant myself it took me years to understand this type of jokes and all the wonderful American puns.

I like what you did. If there is enough room inside a model (or put the caps in a larger car) then this solution is less expensive than using the Super Caps.
. . . 42 . . .