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While helping a friend troubleshoot an issue we discovered when the Lionel passenger cars come on the inrush of current to charge the capacitors is almost 8 amps.  His TMCC direct lockon would trip with 7 cars but fine with 6.  He could add a 7th car once the others were lit.  I went home and used my ZWL to observe the initial current draw on my 8 cars.  His first Polar Diner had an issue and he thought the second did as well but we discovered the high inrush.  Just thought everyone would find this interesting.

Here are the results...

Last edited by MartyE
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I have noticed that on my Z4000 but it will be more of problem with a source that goes from zero to over ten volts instantly like the TMCC Lock On which switches on at 13 volts or a Lionel brick which goes right to 18 volts. If you use a conventional transformer and gradually increase the voltage it shouldn't be an issue with tripping breakers.

Pete

MartyE posted:

Yeah this wasn't meant to turn into a Lionel bash.  Just providing what I observed.  While I agree that it's over kill, I'm pretty sure this design has been around for some time.

No bashing intended, it's just amusing that the law of unintended consequences strikes here.  A simple inrush limiting resistor would solve the problem of the cars, clearly the LED's don't use nearly as much power as the initial surge.  Probably sticking a 2W 50-75 ohm resistor in series with the power supply would probably totally solve this inrush issue.  FWIW, this is how I handle inrush current in my YLB, I have a small value resistor to limit the total current that can be consumed charging the Super-Cap.

MartyE posted:

Yeah this wasn't meant to turn into a Lionel bash.  Just providing what I observed.  While I agree that it's over kill, I'm pretty sure this design has been around for some time.

Marty, 

Friends were running their 18 car train made up of K-Line and Lionel heavy weights containing 4 incandescent bulbs each, with two engines and smoke units on they are near 8 amps most of the time even well lubed.  And sometimes over... 

Last edited by BobbyD
BobbyD posted:
MartyE posted:

Yeah this wasn't meant to turn into a Lionel bash.  Just providing what I observed.  While I agree that it's over kill, I'm pretty sure this design has been around for some time.

Marty, 

Friends were running their 18 car train made up of K-Line and Lionel heavy weights containing 4 incandescent bulbs each, with two engines and smoke units on they are near 8 amps most of the time even well lubed.  And sometimes over... 

Try that with a pair of dual Pullmor motored Lionel F3s and you will be Waaaaay over ten amps. Thats when you bring in reinforcements.

25 amps at 20 volts.

ampzilla_2

Pete

 

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gunrunnerjohn posted:
BobbyD posted:
Friends were running their 18 car train made up of K-Line and Lionel heavy weights containing 4 incandescent bulbs each, with two engines and smoke units on they are near 8 amps most of the time even well lubed.  And sometimes over... 

I can help you with that issue.

 Passenger Car LED Lighting Kit

I sent him the link to get your kit and showed him the ones we purchased John! 

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