D&J RailRoad
Professor of HO
Finally getting around to installing some Dwarf signals on the modular yard throat.
I had quite a few of them left over from the previous layout. I bought a few more at Main Line Hobbies to be sure I had enough because I want to install a few on the empire in the basement too.
OK, 12VDC wall wart, a handful of 1.5K Ohm and 390 ohm resistors so the LEDs don't burn out. They don't show a closed circuit with a VOHM meter so can only test with a resister soldered to a 9volt battery. Didn't bother with the test because they were working when I salvaged them. Installed em next to the tracks and let em dry over night. Today, mounted the wall wart on the module power strip that powered the Digitrax DS64s then rounted the + and - wires to the Tortoise machine contacts. Continued the wire run to the dwarf,,,,,,,,, no light. Hmmmm. Checked for voltage at the two leads, 12VDC. Make solder connection the dwarf leads again. No light. Sumpin is wrong. I did the 9volt battery test on the dwarf signal, red light comes up. reconnect to the wall wart, no light.
Puzzled.
This picture is the connection from the wall wart.
Dwarf signals on the road bed. Engineer reads the one to the right of the track he is on.
I had quite a few of them left over from the previous layout. I bought a few more at Main Line Hobbies to be sure I had enough because I want to install a few on the empire in the basement too.
OK, 12VDC wall wart, a handful of 1.5K Ohm and 390 ohm resistors so the LEDs don't burn out. They don't show a closed circuit with a VOHM meter so can only test with a resister soldered to a 9volt battery. Didn't bother with the test because they were working when I salvaged them. Installed em next to the tracks and let em dry over night. Today, mounted the wall wart on the module power strip that powered the Digitrax DS64s then rounted the + and - wires to the Tortoise machine contacts. Continued the wire run to the dwarf,,,,,,,,, no light. Hmmmm. Checked for voltage at the two leads, 12VDC. Make solder connection the dwarf leads again. No light. Sumpin is wrong. I did the 9volt battery test on the dwarf signal, red light comes up. reconnect to the wall wart, no light.
Puzzled.
This picture is the connection from the wall wart.
Dwarf signals on the road bed. Engineer reads the one to the right of the track he is on.