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25-Lamp C7 Christmas Light Set

25-Lamp C7 Christmas Light Set

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This is one of my C7 Christmas light strings. These were popular before miniature incandescent and LED lights took over. These are much better. The colors are brighter, no annoying 60 Hz strobing, and they last longer too. This set was purchased at a Rite-Aid drug store several years ago and still has all the original lamps.

Sylvania_.jpg More_C7_Lights.jpg 25-Lamp_C7_Light_Set.jpg Philips_Alto_F30T12_Cathodes.jpg

Light Information

Light Information

Lamp
Lamp Type:Incandescent
Base:Candelabra Screw Base
Fixture
Fixture Type:Decorative Light String
Electrical
Wattage:125 (5 watts per lamp x 25 lamps)
Voltage:120
Current:1.04 amps

File information

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Filename:25-Lamp_C7_Light_Set.jpg
Album name:Bamaslamma1003 / Other Stuff
Keywords:Lanterns
File Size:59 KB
Date added:Sep 05, 2010
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DieselNut
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John


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Sep 05, 2010 at 10:40 PM Author: DieselNut
I love the C-7s, especially the twinkle ones. A friend gave me several hundred NOS C7 twinkle bulbs, so I bought 6 strings of regular C-7 lights and will install the twinkle bulbs for this Christmas's display! LEDs are boring, just like electronic IS ballasts!

Preheat Fluorescents forever!
I love diesel engines, rural/farm life and vintage lighting!

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Sep 05, 2010 at 11:03 PM Author: Mercury Man
Those really look like C9s. My favorite Christmas lights are old C9 ceramic bulbs. They remind me of my grandparents' Christmas tree back in the mid-late 70s.




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Sep 06, 2010 at 01:55 AM Author:
I like the transparent bulbs. But my favorite light strings are the old twisted-pair/Bakelite socket type.
NiMo
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Sep 06, 2010 at 05:06 AM Author: NiMo
Problem with those older sets, especially with the cloth insulation, is that they're more of a fire hazard.

Group Replacement, Baby

dor123
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Other loves are computers, office equipment, A/Cs


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Sep 06, 2010 at 06:28 AM Author: dor123
The reason of the 60hz flickering of the LED christmas lights is because that the mains frequency isn't filtered.
The DC converting itself don't eliminates the mains frequency flickering of the LEDs and the mains frequency itself require a seperate filtering by a filtering capacitor.
LED christmas lights are tend to be manufactured as cheapest as possible, because they are holiday products that usually used only once, and i think that this is the reason why the mains frequency in them isn't filtered.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

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Robert


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Sep 06, 2010 at 07:52 AM Author: rjluna2
@dor123: I hate those annoying flickering LED christmas light. They are the worst offenders.

@Bamaslamma1003: Could you describe these colors of those transparent bulbs that you have this posted? Colors with bulb lighted does not do justice on camera By the way, nice collection

Pretty, please no more Chinese failure.

xmaslightguy
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^homebuilt fixture


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Sep 06, 2010 at 09:08 AM Author: xmaslightguy
With the LED Christmas lights there's a few different forms:

'Half-Wave' The most-basic/cheapest, simply a bunch of LEDs (and in most cases + a couple resistors) all wired in series & connected to the AC 120v. ... Since LEDs are DC devices, they use only half of the AC waveform (thus the name 'Half-Wave' and why you see flicker)

'Full-Wave' Generally much more expensive...Wired the same as the cheap 'Half-Wave' sets, except for one thing, at the beginning of the string they add a Diode-Bridge. That ofcourse flips the '-' half of the AC waveform over...so the LEDs will use the full thing ((thus the name 'Full-Wave', this greatly reduces flicker - unnoticeable to most people)

(no real name for this, but 'Full-Wave+Filtered') In this case they add a Capacitor (and sometimes other parts/more capacitors) after the Diode-Bridge. Sure, there will be no flicker, but these are a bad bad thing...they cannot be flashed or dimmed and "more parts" (esp capacitors) is more things to go wrong.


(those are unofficial names...used by people on the Christmas light forums (and/or those really into xmas lights ), not light manufacturers)

Colored Fluorescent's such as F40T12 Red or  Green or Blue are awesome...

Bamaslamma1003
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Sep 06, 2010 at 10:31 AM Author: Bamaslamma1003
@rjluna2: The lamps are pink, red, yellow, green, and blue.

Power provided by Alabama Power, 120 volts 60 Hz. House is an LED free zone, tungsten and linear fluorescent only.

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Robert


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Sep 06, 2010 at 10:41 AM Author: rjluna2
Thanks

D**m, you got modern transparent coated yellow bulb there

Pretty, please no more Chinese failure.

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