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Old 16-04-2018, 01:10 PM   #11
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Thanks for this. But i have read on a posts that using bridge rectifier's can create a volt drop "but this was for a volt/amp meter" & with having to use this at least 10 times on the tracks points, should i be worried? or was this just in the amp meter situation. Thanks
A bridge rectifier provides "full wave rectification" meaning that current passes to the load on both positive and negative cycles of an AC supply. In contrast a single diode only provides current on either the positive or negative half cycle and is known as "half wave rectification", and needs better smoothing circuitry to provide a stable DC supply. Because half wave is only passing current for half the cycle then this does indeed reduce the resulting DC voltage level. There is some attenuation using a bridge rectifier but not as much. Diodes generally provide a voltage drop of 0.7v (from memory!).

A DCC supply is not a true AC signal compared to a sinusoidal wave (as provided from a mains source) so the actual DC volts is more difficult to predict, but having said that, the resulting output will remain steady enough to make no discernible difference to the intensity of any connected light source such as an LED or a filament bulb.

As others have said though, I would restrict the amount of DC current sourced from your DCC supply, especially if not using a booster, as this will at some point start to disturb the actual DCC signals for controlling your trains and accessories.
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Old 17-04-2018, 10:06 PM   #12
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Just a note: I would be running a 4amp supply but seems like i might be better using a Gaugemaster DCC80 DCC Autofrog unit. OK, they are a fiver a piece, but as this is wired to the rails & this will free up the points volt free switch for the LED's on a clean supply, which seems a bit more sensible.

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Old 17-04-2018, 10:37 PM   #13
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Did I not suggest that the other day?
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Old 17-04-2018, 10:42 PM   #14
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Did I not suggest that the other day?
Try using larger letters Steve
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Old 17-04-2018, 10:47 PM   #15
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And shout them instead of typing.
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Old 17-04-2018, 10:55 PM   #16
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Try using larger letters Steve
Can you imagine the backlash if I did.

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And shout them instead of typing.
I did, but the dog just gave me a funny look.
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Old 18-04-2018, 08:15 AM   #17
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Did I not suggest that the other day?
Remarkably restrained I thought
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Old 18-04-2018, 10:10 AM   #18
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Did I not suggest that the other day?
So he took your advice, why all the fuss!
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