The main purpose of your power supply is to run your trains. To run your train your power supply must supply energy for your locomotive, smoke unit, sound system , and any lighted cars. You may also need power for accessories like switches, street lights, building and house lighting or any other accessories. Your TOTAL POWER REQUIREMENTS depends upon the number of locomotives or motors, and ALL OTHER items that require electricity. The length of the track is not a factor. See similar questions...

No, the 810 and 820 series meters operate in using a "single ended supply" meaning you only need between 9 and 25 VDC to operate them. We sell very reasonably priced power supplies that accomplish this in a very economical manner. See similar questions...

A Transformer is an electrical device by which alternating current of one voltage is changed to another voltage using coils. There are several different types, but they all basically do the same thing - change the voltage. They are usually heavy for their size due to the weight of the coils (size and weight depends on their rating). A Converter is an electronic device that is used in some cases instead of a transformer. See similar questions...

Using thicker power and ground cables will allow your amplifier to draw the juice it needs from the battery more easily. You'll find all the power and ground cable you need available in our online Installation Store. Before you can decide on the appropriate gauge wire for your installation needs, you need to figure out the current demand of your system. To do that, you must ascertain the approximate current draw (in amperes) of your amplifier (or amplifiers). See similar questions...

Sizing an inverter is nothing but simple math. A TV may require 150 watts and the VCR you want to add with it may require only 100 watts. Just simply add the wattage requirement for all the appliances that will run at the same time. The answer is 250 watts for both the TV and VCR to run. However, it is recommended to always go slightly bigger (25%). This will ensure that the inverter will power all appliances safely. For more information, visit our Inverter Sizing page. See similar questions...

If the MicroScribe is connected to a non-powered USB hub, then you will need the external power supply. If the MicroScribe is connected directly to the computer or to a powered USB hub, then there is no need for the power supply. See similar questions...

Would have been a lot more if not for all the developers, programmers, skinners, electrical gadget makers and posters/members with the needed advice and help on these forums. VIA MII 10000|WD160 GB|Audigy2 NX||512Ram|Orinoco Gold Wifi|Motorized In Dash lilli|GPS Rikaline 6010|Opus 150|Sirius Radio|Nvidia FX5200 PCI| See similar questions...

First of all, you might consider whether it might not be better to wait until getting to the UK to buy transformers. There's not much of a market in the US for converters, since there is only one electrical standard in the US and Canada. Europe seems to be a little more aware of the existence of different electrical standards in the world, and thus stores probably have better availability and wider selection. See similar questions...

Most laptops run on direct current, so they come with transformers that convert alternating current into direct current. If you look on the power supply that came with your laptop, you will see (probably in very small print) some specifications concerning an input voltage range. If your power supply indicates that it can accept an input voltage range from 100 to 240 volts, then you do not need to buy a new transformer to use your laptop in London. See similar questions...

Many people use the wrong size cable for their systems but working out what power cable you need is actually very simple. Add all the ratings together. ie total each amp so a 2x50wrms amp would be 100, then add the totals together. This gives you a number representing the current draw, in amps, of your system. Then match the current with the length of the cable in the following table to give you the correct size cable to use. See similar questions...

Both power and distribution transformers are used for T&D applications (transmission & distribution). The difference between power and distribution transformers refers to size & input voltage. Distribution transformers vary between 25 kVA and 10 MVA, with input voltage between 1 and 36 kV. Power transformers are typically units from 5 to 500 MVA, with input voltage above 36 kV. See similar questions...

In fact, transformers are available in a wide range of wattage ratings, so we need to look at the question the other way around: "what size of transformer do I need to power the group of lights required"? This is simply a matter of multiplying the wattage and numbers of the lamps used in the luminaires (garden lighting fittings) to be connected to the transformer. For example 6 light fittings at 20 watts = 120 watts in total. Therefore a 150 watt(va) transformer is required. See similar questions...

A transformer between 14Vac and 16Vac. For a typical installation, the minimal power required is 40Va. See similar questions...

The right answer to this question depends upon which subwoofer you choose. You'll find a recommended power range (in continuous or RMS watts) listed in the specifications for each subwoofer on this website. The lower number is the absolute bare minimum amount of wattage you need to get acceptable results. Generally, more power is better because bass notes are power hungry. See similar questions...