More lighting know how from Barry

“Hi Al,

Barry from South Australia here again.

This is a follow up to my last email re: the CL2N3-G IC (Integrated Circuit) module.

The CL2N3-G picture compares the size to a resistor, and the TO-92 picture shows the module with its 3 legs.

The leg marked NC (Not Connected), can be cut off flush with the body, as it is not needed. The VA leg is the + connection, and the VB leg is the – connection.

The FR_Circuit picture shows a simple circuit for wiring a forward & reverse LED for an Analogue setup. The CL2N3 can be used with DCC, just replace the resistors with CL2N3’s. The Multiple LEDs picture, shows how to wire multiple LEDs to 1 CL2N3, which is good for lighting coaches (passenger trains).

The Standard Circuit picture, is, well, a standard wiring diagram of the CL2N3.

A search on the web will also provide many more applications for this wonderful little device, and there is another version that can supply 25mA to a LED, a CL25N3-G IC.



“I was looking at the TIPS FOR YOU and I want to give you one. I am retired from a power utility and use the info I have to include running electric (not hot) to all of the locations that us electric.

I found that buying fencing of all this cost lots of money, so. I now use Plastic Window screen for fence. You can turn it at different angles to get square, or diamond shaped fence. Just cut it to your right height with a pair of scissors.

For the posts I save used stick matches or tooth picks. For the wire on the power poles and high tension towers I use the elastic thread sold at sewing supply stores. This makes hitting the lines not pull or brake the poles. or towers.


“I got a great tip from a Jim O’Connell of Santee,CA. he builtmy Z scale layout in 2012. I too neede a way to keep my ‘ MTL lumber loads,ect. from sliding off my flat cars.

Jim told me to get some elmers glue and put a small drop on the cars and also on the wood packs. Then when you change from runnind those cars to something else you can peel the wood packs off of the cars and be able to put them back into the plastic “jewel cases” they came in.

To get the glue off of the load and the cars all you have to do is”roll” the glue spot back and forth until it comes off. The glue will stay “soluable” for several years.

It comes in a small brown bottle with a brush top applicator. Hopes this helps. Most of wjhat I have learned about Z scale is from the people who have been in that scale a long time. Now if it had anything to do with your HVAC system or your ductwork I know all th answers and tricks of that trade, as I was a sheetmetal mechanic for over 40 yrs.

Lee Barry Bristol,Va”

Thanks to everyone – some nice tips. Please keep’ em coming.

Latest ‘ebay cheat sheet‘ is here.



6 Responses to More lighting know how from Barry

  1. A word of warning when usng the CL2N3 current source.

    The TO92 package shown is rated for 600mW @ 25C

    If you try to use it at 90V it will get VERY HOT and burn out.

    In an enclosed space it’s probably only safe to have no more than ~15V across the device. (That’s the supply voltage less the voltage drops across all the LEDs)


  2. Okay, here is a couple of tips.

    For those with spouses that use make-up brushes. Buy them a nice make-up brush set and ask them for their old brushes. The brushes are useable for weathering and detailing of engines and cars. Remember to wash them well with soap and water to remove any make-up and then set them aside for a couple of days, until they are dry. Don’t use a hair dryer to dry them, it can damage the brushes.

    Another tip is for those who occasionally use microwaveable dinners. Save those dinner trays. After they are cleaned and dry, they can be used for holding parts of models that you’re in process of building or repairing. The trays could also be used while you are creating scenery on you layout, for holding your small batch of plaster, extra water and your roll of plaster gauze, or you could use them for holding your washes when you’re coloring your scenery.

  3. Lee
    I think you mean rubber cement not elmers gloe, and yes it works great for everything from keeping loads of flat cars to holding down your track planning templates.
    Sheila, Idaho

  4. Dinner trays such as microwaveable dinners make good portable work benches.

  5. Thanks for all the tips. Ty will come in handy.


    Tom N, Maryland


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