DC Power Supplies - All of the following supplies are designed to operate
with an accessory input of AC or DC max input of 22 volts
Power Supplies.
We have found varying applications that include powering LEDs in buildings or elsewhere. The version to the right is normally configured to supply up to 3.3 VDC using transformer accessory voltage with input up to 22 VAC. An onboard potentiometer is provided to set the specific voltage output that translates to the brightness of the LEDs driven. Alternate output voltages are available by request to support your application (e.g., 6 VDC, 12 VDC, etc.). The output supports up to 1.5A. Each supply comes with about 12" of red & black wire that connects to supply power to your lighting bus. For additional information, download the Power Supply Information Sheet in the upper left of this page. Still got questions? Drop me an email RoyzTrains@aol.com.
Fixed Output DC Power Supplies.
A fixed output of 3.3 VDC with a max current of 500 mAmp can be used in place of the above variable output supply for lighting LED buildings at the maximum brightness. For Example, these may be used in an industrial portion of your layout. Both perform the same and are based on a switching regulator. It has screw terminals for the input and 12" leads for the output.
12 VDC Strip Lighting. We have built power supplies for multiple customers to support the popular LED strip lights. These are 3 LEDs per segment and available up to 100 segments on a roll. The current requirement varies from 0.25 - 0.5 amps per meter depending on the particular vendor used. The low power supply above is not recommended for more than a few segments. This specific version of the high power supply provides a variable output of 7-12 VDC which corresponds to the typical light output from off to full power. Up to 3 meters of strip lighting are supported at the maximum output voltage (more for the lower power LED strips). An input of 12-22 volts (AC or DC) is recommended. Installation is identical for all versions. We have a limited supply of the 12VDC strips, email with your needs.
Lenox Billboard Supplies
The supply was developed for Len's Diecast Trains and is available here or at York in Orange Hall, Row CC. The power supply will support up to 6 (six) billboards and requires 5 or more volts in AC or DC. Most customers use an accessory voltage for external power. Two types of connectors include the screw type terminal and the press/insert as shown in the photo.
Which Supply will work best?
The more expensive switching regulators (priced at and above $12) are the most robust. These will supply 500ma (fixed 3.3VDC) and up to 1A (High Current Variable). For lower power applications, the 6 and 12 VDC supplies are rated in wattage (or power). You can always contact us with questions! To determine if the lower cost units will work for you use the following formula:
(Input Voltage X 0.7 (AC) - Load Voltage (DC)) X Load Current = Power needed
For example, if you will be driving two LEDs for marker lights in a tender, then for mula would be
(20VAC (max track voltage) x 0.7 - 6VDC (two 2mm LEDs in series)) X 10ma = 80mw
The $7 supply works for this application. Yes, I can supply this arrangement with the required resistor for tender or front marker LED applications. Price for this would be $12.
Terminal Blocks. There are many good ways to connect LEDs from buildings to the power supply. We offer small two terminal blocks. These are typically attached either with a small screw, or just use a dab of Goop to hold it in place. These blocks are available in any quantity you want.
Low Current Supplies.
When using one of the Ngineering railroad modules without a supporting RoyzTrains LED board, we have a 12 VDC, low current (20 ma) power supply that can be used to support the DC requirements of all the Ngineering products. This unit has only solder connections to minimize size and keep cost down.
Also available are 6 and 12VDC 500 mW supplies with screw input terminals and solder outputs. Both come with heat sinks and can provide around 200 ma current.
Other potential uses include chargers for on-board batteries as found in MTH protosound and QSI battery supported electronics. The power supplies have also been used for building lighting, bridge operation (added polarity switch and box), accessory supply and DC can motors. The high current supply is used in the Turntable Control offered here.
The power supplies may be used for incandescent lighting or to drive DC motors or other DC applications within the current limitations. Let me know your application at royztrains@aol.com and I can modify to support your needs at minimal or no additional cost.