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Author Topic: Lamp module dims lamps  (Read 4914 times)

LT

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Lamp module dims lamps
« on: January 03, 2010, 06:36:04 PM »

Anyone have experience with their lamp modules dimming their lamps compared to directly plugging in to the wall outlet? Any help would be appreciated.
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dave w

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Re: Lamp module dims lamps
« Reply #1 on: January 03, 2010, 06:43:16 PM »

Yes. The "100% bright" voltage from a X10 Lamp Module will be few volts less than the voltage from the outlet. So a side by side comparision of two identical lamps will show a very, very, slight difference between the lamp brightness.

You are not being bamboozled by X10's "Resume Dim" feature where the light comes back ON at the same level it was turned OFF at?.
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Brian H

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Re: Lamp module dims lamps
« Reply #2 on: January 03, 2010, 06:43:59 PM »

What type of lamps? Incadescent; CFL; Low Voltage?
Could make a big difference in how a lamp module control lights compared to direct connection to the wall outlets.
Like a CFL and Low Voltage Lamp should not be on a lamp module that can be dimmed.
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LT

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Re: Lamp module dims lamps
« Reply #3 on: January 03, 2010, 06:48:47 PM »

THanks for prompt responses. I tried with two lamps - both have incandescent bulbs. One is a three way and the other is a simple on-off. The dimming is quite noticeable.
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Brian H

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Re: Lamp module dims lamps
« Reply #4 on: January 03, 2010, 06:53:52 PM »

You have a noticeable difference in brightness. With the Lamp Module Full On and when directly connected to the outlet?
>40 Watts and <300 Watts?
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LT

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Re: Lamp module dims lamps
« Reply #5 on: January 03, 2010, 06:57:40 PM »

Maybe a 25% loss in brightness.
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LT

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Re: Lamp module dims lamps
« Reply #6 on: January 03, 2010, 07:07:47 PM »

I did not reply fully. The controller is full on and the module is directly plugged into the wall outlet.
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Brian H

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Re: Lamp module dims lamps
« Reply #7 on: January 03, 2010, 07:13:50 PM »

Controller is fully on?
You didn't plug an X10 lamp Module in to an outlet that is controlled by a dimmer did you or a lamp that also has a dimming local switch on it?
The lamp module should not be on any circuit controlled by another dimmer or controlling a lamp that also has a built in dimmer switch.
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LT

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Re: Lamp module dims lamps
« Reply #8 on: January 03, 2010, 07:18:22 PM »

No. I'm plugged directly onto an outlet that does not have a dimmer and I've had the same result with other outlets. Is this unusual?
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Knightrider

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Re: Lamp module dims lamps
« Reply #9 on: January 03, 2010, 07:24:25 PM »

I'm experiencing similar problems as referenced in this thread:
http://forums.x10.com/index.php?topic=19436.msg108749#msg108749
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Brian H

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Re: Lamp module dims lamps
« Reply #10 on: January 03, 2010, 07:33:42 PM »

Well it is not normal for my year old soft start Lamp Modules or older lamp modules.
Since you and Knightrider seem to have similar findings. I can not say if this is normal for the new ones. IMHO it should not be normal for any lamp module to not go to almost 100%. I hope it is NOT Normal!
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LT

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Re: Lamp module dims lamps
« Reply #11 on: January 03, 2010, 07:35:22 PM »

Thanks. I guess I'll be on the phone with tech support tomorrow.
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Brian H

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Re: Lamp module dims lamps
« Reply #12 on: January 03, 2010, 07:38:24 PM »

OK. Let us know if you get any more details on this subject.
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Brian H

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Re: Lamp module dims lamps
« Reply #13 on: January 03, 2010, 09:06:25 PM »

This may also apply to Knightriders thread.

I tested a one year old soft start Date Code 08A01 and a few year old before soft start Date Code sticker fell off Lamp Modules.
Using a 40 watt incandescent bulb.

At the full on state. Both had between 3.5 and 4.0 volts difference on the wall outlet and the modules outlet.

At minimum dim the soft start went to a 20 volts on the modules outlet.
At minimum dim the older one was at 1.95 volts on the outlet.

When off the older ones local sensing had about 0.040 AC volts and 0.0045 DC volts on the modules outlet. There is a diode in the older ones.
When off the soft start one had 0.010 AC volts on the modules outlet.

So I would say if you can't get almost 100% brightness when ON. Either there is a problem with a run of the modules or X10 again has changed things.  ??? ::)
« Last Edit: January 03, 2010, 09:08:19 PM by Brian H »
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LT

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Re: Lamp module dims lamps
« Reply #14 on: January 03, 2010, 09:24:39 PM »

Wow. What a thorough and thoughtful reply. Thanks for your efforts. Right now I am looking at a lamp with a 60 watt bulb that looks like a night light. I hope tech can be of some help.
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