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I am often pleasantly surprised when the MLS Archives turn up answers to new questions I may have.
There were a couple of Lionel 0-4-0 locomotives I wanted to modify by adding a headlight and LGB smoke unit. Since current LGB locos use 5 volt circuits I wanted to try to do the same with the Lionel locos.
Remembering that someone had once recommended a Radio Shack 5 volt regulator I worked backward and first found the Radio Shack part number at http://www.radioshack.com/product/index.jsp?productId=2062599&cp
it was 276-1770.
A search of the MLS archives for 276-1770 turned up http://archive.mylargescale.com/forum/topic.asp?TOPIC_ID=41065
and I found my answers.
[script removed] alias E.R.
1st Class Member
USA
Posted - 27 Aug 2006 : 13:15:59
[script removed]
Hi Ward,
I just got done making that circuit.
Went to Radio Shack and got the following
Full Bridge Rectifier - 276-1146
5 volt regulatgor - 276-1770
47uf Electrolytic Capactior - 272-1015
100 ohm registor - 271-1108
cost me $6.16
reason for the rectifier - allows the headlight to be on no matter which way the direction the engine is moving.
delete the use of the rectifier if you only want the light on in one direction. Since the 5 volt regular only works when + = + and - = -.
Hope that helps
Rick R.
The guy at Radio Shack could not tell me how to connect the regulator but Del had provided the information:
[script removed] Engineer
1st Class Member
USA
Posted - 27 Aug 2006 : 18:01:25 http://www.fairchildsemi.com/ds/LM/LM7805.pdf
http://www.datasheetcatalog.com/datasheets_pdf/L/M/7/8/LM78L05.shtml
The topic had been "LED Circuit Question" but that did not matter. The results were what I wanted.
Thanks to Rick and Del I now have two Lionel locomotives with lights and smoke (I like the 6 volt light I installed better than a LED). I just added a single diode to protect the 5V regulator which gives me a light in forward (only) which is what I wanted anyway.
The smoke also only works in forward but that is fine with me.
There were three main reasons why I wanted the 5 volt circuit:
1. the light reaches full intensity and stays at it quickly
2. the smoke does the same
3. I had some spare 5 volt smoke units so I did not have to buy any new ones.
Thanks Rick, Del and Shad - for making my task a LOT easier.
Jerry
There were a couple of Lionel 0-4-0 locomotives I wanted to modify by adding a headlight and LGB smoke unit. Since current LGB locos use 5 volt circuits I wanted to try to do the same with the Lionel locos.
Remembering that someone had once recommended a Radio Shack 5 volt regulator I worked backward and first found the Radio Shack part number at http://www.radioshack.com/product/index.jsp?productId=2062599&cp
it was 276-1770.
A search of the MLS archives for 276-1770 turned up http://archive.mylargescale.com/forum/topic.asp?TOPIC_ID=41065
and I found my answers.
[script removed] alias E.R.

1st Class Member
USA



I just got done making that circuit.
Went to Radio Shack and got the following
Full Bridge Rectifier - 276-1146
5 volt regulatgor - 276-1770
47uf Electrolytic Capactior - 272-1015
100 ohm registor - 271-1108
cost me $6.16
reason for the rectifier - allows the headlight to be on no matter which way the direction the engine is moving.
delete the use of the rectifier if you only want the light on in one direction. Since the 5 volt regular only works when + = + and - = -.
Hope that helps
Rick R.
The guy at Radio Shack could not tell me how to connect the regulator but Del had provided the information:
[script removed] Engineer

1st Class Member
USA

http://www.datasheetcatalog.com/datasheets_pdf/L/M/7/8/LM78L05.shtml
The topic had been "LED Circuit Question" but that did not matter. The results were what I wanted.
Thanks to Rick and Del I now have two Lionel locomotives with lights and smoke (I like the 6 volt light I installed better than a LED). I just added a single diode to protect the 5V regulator which gives me a light in forward (only) which is what I wanted anyway.
The smoke also only works in forward but that is fine with me.
There were three main reasons why I wanted the 5 volt circuit:
1. the light reaches full intensity and stays at it quickly
2. the smoke does the same
3. I had some spare 5 volt smoke units so I did not have to buy any new ones.
Thanks Rick, Del and Shad - for making my task a LOT easier.
Jerry