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Engine Head Light Question
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 Posted: Fri Mar 13th, 2015 08:08 am
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George W
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Hi Gang,

I have a cheap HO Power Model engine and the head light is only as bright as the speed of the engine. Slow speed equals dull light, very high speed equals bright light.

Is there a way to have the light bright all the time?

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 Posted: Fri Mar 13th, 2015 09:34 am
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Helmut
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Well, not all times, but when the engine is moving - as done in MR 1956:

Attachment: GEORGEW.jpg (Downloaded 64 times)



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 Posted: Fri Mar 13th, 2015 03:33 pm
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Herb Kephart
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Helmut,

George (and others) may not understand the diode symbols,
or how the drop across them influences the lamp.

Herb



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 Posted: Fri Mar 13th, 2015 05:33 pm
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George W
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Herb Kephart wrote:
Helmut,

George (and others) may not understand the diode symbols,
or how the drop across them influences the lamp.

Herb


Yup, I'm clueless. I don't understand it at all.



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 Posted: Fri Mar 13th, 2015 07:15 pm
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W C Greene
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Radio Shack (and others) have miniature DIODE BRIDGE RECTIFIERS which fit into most everything. You DO need to replace the 12 volt bulb with a 1.5 volt bulb. I still use these "constant light" diodes in my r/c locos, I have used them in DC locos for maybe 40 or so years. If I can do this (I am a lektric doofus) then anybody can.

Woodie

### Well, you can wire for DCC and then the light will be on when the loco is standing still. ###



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 Posted: Fri Mar 13th, 2015 07:47 pm
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Helmut
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@GeorgeW
Maybe this makes it clearer.

Attachment: Untitled Sketch 2_Steckplatine.jpg (Downloaded 50 times)

Last edited on Fri Mar 13th, 2015 07:47 pm by Helmut



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 Posted: Fri Mar 13th, 2015 11:05 pm
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pipopak
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... Radio Shack is no more (at least here). Jose.



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 Posted: Sat Mar 14th, 2015 05:23 am
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Kent K
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With the justified demise of Radio Shack, there are other places to order electronics parts. Some of them include:

Newark Electronics
Allied Electronics
Digi-key
MCM Electronics
Jameco

Check their websites for particulars or do a search for electronics mail order suppliers. I have ordered everything from resistors and small parts to complete computer systems on line and had relatively little trouble. Often items from walmart and Kmart can be re-purposed for hobby use. I am thinking specifically of items like the LED strings of several individual lights. It does help to be somewhat familiar with the electronics components themselves, but I have found that usually there is someone in the community who will lend a hand. Sometimes a student can be enticed to help out with proper incentives.

Kent K



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 Posted: Sun Mar 15th, 2015 07:45 am
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George W
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W C Greene wrote:
Radio Shack (and others) have miniature DIODE BRIDGE RECTIFIERS which fit into most everything. You DO need to replace the 12 volt bulb with a 1.5 volt bulb. I still use these "constant light" diodes in my r/c locos, I have used them in DC locos for maybe 40 or so years. If I can do this (I am a lektric doofus) then anybody can.

Woodie

### Well, you can wire for DCC and then the light will be on when the loco is standing still. ###


Thanks for the info, Woodie :)



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 Posted: Sun Mar 15th, 2015 07:47 am
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George W
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Helmut wrote:
@GeorgeW
Maybe this makes it clearer.



Yes, that's helpful, I can follow that. thanks Helmut



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