A lot of modellers replace the plastic wheels on their wagons with metal ones. But why do they do this? and is it a...
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Can I replace the plastic wheels on my wagons?Read more -
What is live steam?Read moreLive steam refers to miniature, working models of steam-powered vehicles, such as locomotives, boats, and stationary...
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What is the best brand for OO locomotives?Read moreThere are lots of manufacturers making OO gauge engines. The most common ones are Hornby, Bachmann but there are also...
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What is a liquid mask and how do they work?Read moreLiquid Masks are latex-based liquid masking solutions, generally supplied in a small bottle. They are a viable and...
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How can I easily clean track in a tunnel?Read moreCleaning tracks in a tunnel on a model railway can be challenging due to the limited access and confined space....
What is the voltage on the track when using DCC?
Despite what most places will say, the voltage on the track when using DCC is not 16V. It is not 15V or 12V either.
Actually, as the DCC signal is digital, it is a square wave.
Unfortunately, square waves cannot be measured by standard digital multimeters of the type you are likely to be using. They are designed to measure either DC (analogue) signals or sine waves (like the mains). It means the value you read on the equipment when testing DCC is incorrect.
Yes, most multimeters will display a value in the range 14V to 18V but this is erroneous and is meaningless.
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