120. New, Smaller Lighting Keep Alive Circuit

Back in video 101 I shared with you a circuit designed to provide keep alive lighting for cabooses and passenger cars. However folks asked me for something a bit smaller sop I did some digging around and found a way to make the circuit both smaller and easier to put together. So enjoy the video and let me know how it fits into your rolling stock. and remember that you can connect the various components using individual wires giving you greater flexibility when it comes to shoehorning the circuit into tight locations. Below is a list of the components I used and possible sources. Remember that some of these are available through a search on eBay or the internet.

Addendum: If your DCC system shuts down when you put a caboose with this circuit on the track it probably is due to the inrush current of the capacitor charging up, which the DCC system sees as a short circuit. To avoid the shutdown install a 100 ohm 1/4 watt resistor on one of the input lead to the bridge rectifier. This will prevent the shutdown but it may delay the light coming on for a few seconds. Also the capacitor will take longer to fully charge up but after that the light will be bright as ever and there will be no flicker.

Components

Bridge rectifier 100V, 1A--All Electronics (allelectronics.com) FWB-11 or Mouser.com 625-DF01M-E3
Buck module voltage reducer/regulator--eBay
3V, 1F Super capacitor--Mouser.com 581-SCCR12E105SRB
3mm Golden White LEDs--eBay
Surface mount (SMD) Golden White LEDs--eBay or DCC dealers
Spring Phosphor bronze--eBay

Видео 120. New, Smaller Lighting Keep Alive Circuit канала Model Railroading