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 1 
 on: Today at 02:52:35 PM 
Started by flippityflop - Last post by Hero999
The photo on the ballast shows two CFL bulbs with 4-wires each. But your OLD CFL bulbs have only 2-wires each.

The ballast starts the bulb by heating its filament at each end. Your OLD bulbs do not have filaments, they are started with an OLD starter thingy that creates a high voltage spike.
Oh yes they do have filaments. They use a switch startler, like old fluorescent lamps do but it's built into the the fitting. The high voltage pulse is produced by the inductive ballast.

Quote
DO NOT overload a ballast with too many bulbs because then it will get hot and burn out or catch on fire.

Why not buy modern inexpensive CFL light bulbs that have a small electronic ballast attached to the base?
There's no danger of that happening. If you try to connect two lamps in parallel, the one with the lowest ionising voltage will start, leaving the other one off. It won't work but won't kill the ballast either.

i don't think you read through the listing page description:

Lamp Configurations

        (2/1)  CFQ/M13W/G24q
        (2/1)  CFQ/M13/GX24q
        (2/1)  CFS16W/GR10q (2D)
        (2/1)  CFS10W/GR10q (2D) 4-pin lamp
        (2/1)  CFT9W/2G7
        (2)     CFT7W/2G7


- it lists CFT9W and 2G7 together. google'd it and found CFT9W are  2-pins, while 2G7 are 4 pins. maybe it can accommodate (2/2) same types or two CFT9W and one 2G7 (2/1), so it has a total of 8 wires??
No, it doesn't work like that. I suggest you read up on how fluorescent lamps work first.

http://www.repairfaq.org/sam/flamp.htm#fb
http://home.howstuffworks.com/fluorescent-lamp1.htm


 2 
 on: Today at 02:34:53 PM 
Started by flippityflop - Last post by Hero999
Those cheap old lamps sound too cheap to be any good.

Yes, you need a four pin lamp for a four pin ballast but a 9W ballast won't drive a 36W tube.

Why not buy a UV CFL with the ballast built-in?
http://www.ebay.com/itm/UV-BLACKLIGHT-BULB-compact-fluorescent-cfl-PARTY-blacklite-15w-screw-in-base-NEW-/310436043164?pt=US_Light_Bulbs&hash=item48476e199c
http://www.ebay.com/itm/25w-UV-Black-Light-Bulb-Compack-Fluorescent-Light-25W-Bulb-E26-Standard-North-/141254573924?pt=US_Light_Bulbs&hash=item20e36dbf64
http://www.amazon.com/Fluorescent-Standard-American-Household-Ultraviolet/dp/B0097C8H5C/ref=pd_cp_hi_2
http://www.amazon.com/Satco-S7277-Spiral-Color-Blacklight/dp/B003U674VO/ref=pd_cp_hi_3

 3 
 on: Today at 02:24:02 PM 
Started by flippityflop - Last post by flippityflop
The photo on the ballast shows two CFL bulbs with 4-wires each. But your OLD CFL bulbs have only 2-wires each.


i don't think you read through the listing page description:

Lamp Configurations

        (2/1)  CFQ/M13W/G24q
        (2/1)  CFQ/M13/GX24q
        (2/1)  CFS16W/GR10q (2D)
        (2/1)  CFS10W/GR10q (2D) 4-pin lamp
        (2/1)  CFT9W/2G7
        (2)     CFT7W/2G7


- it lists CFT9W and 2G7 together. google'd it and found CFT9W are  2-pins, while 2G7 are 4 pins. maybe it can accommodate (2/2) same types or two CFT9W and one 2G7 (2/1), so it has a total of 8 wires??

 4 
 on: Today at 01:55:10 PM 
Started by flippityflop - Last post by flippityflop
you mean to say i should've gotten these ??:
http://www.ebay.com/itm/321293131731  (36W)

about $~28 total (price + shipping) -- hardly inexpensive. i wasn't just buying any CFL (which are around $~7 or so), these are UV lamps.


well, the four 9W "old" UV CFLs that i bought were practically just a dollar each ($~6 total) and i thought finding the appropriate ballast was just easy peezy.

 5 
 on: Today at 01:40:31 PM 
Started by ElectronicMender - Last post by redwire
rea5245 has offered some price comparisons at http://pcbshopper.com/.

 6 
 on: Today at 11:02:10 AM 
Started by BradC - Last post by BradC
Hello everyone,

My name is Brad and I have a part of a project I have been working on that I am having trouble moving past.  I want to preface this with the fact that I am not an electronics guy aside from working on basic circuit board part replacements for some stage lights that I sell.

The part of the project I need help with is finding or getting developed a device with the following specifications:

-As small in size as possible (bottle cap sized ideally)
-Waterproof
-Rechargeable battery
-A button that when pressed administers an electric pulse or shock
-Adjustable sensation level

Anyway, I have approached several electronics manufacturers to no avail.  Thought I'd try here and see if anyone wants to help me on this project. Thanks a lot!

 7 
 on: Today at 08:39:30 AM 
Started by flippityflop - Last post by audioguru
I have some modern CFL light bulbs that have burned out. Their glass coil has 4-wires, not 2-wires and there is a filament at each end the same as those huge old glass fluorescent tubes.

I saw 2-wire CFL glass lamps about 18 years ago because my daughter had one for her desk light.

 8 
 on: Today at 08:33:04 AM 
Started by flippityflop - Last post by audioguru
The photo on the ballast shows two CFL bulbs with 4-wires each. But your OLD CFL bulbs have only 2-wires each.

The ballast starts the bulb by heating its filament at each end. Your OLD bulbs do not have filaments, they are started with an OLD starter thingy that creates a high voltage spike.

DO NOT overload a ballast with too many bulbs because then it will get hot and burn out or catch on fire.

Why not buy modern inexpensive CFL light bulbs that have a small electronic ballast attached to the base?

 9 
 on: Today at 03:43:40 AM 
Started by flippityflop - Last post by flippityflop
i`m thinking of buying this ballast
http://www.ebay.com/itm/200971855385

to power 2 of my 2pin 9W UV CFLs:
http://www.ebay.com/itm/331138643631


it says it can drive two 9W CFLs at the same time.... but i wanna push it and probably drive more (maybe 4 in total??)... can it be cheaply done? maybe a separate starter for each new lamp added and then have them parallel for each output.

i have a feeling the answer would be no, hey, i still gotta ask.

 10 
 on: Today at 03:23:46 AM 
Started by flippityflop - Last post by flippityflop
A 4-pins compact fluorescent lamp tube has a filament at each end for starting.

A 2-pins compact fluorescent lamp is probably VERY OLD and used a huge and heavy inductor as a ballast to provide a high voltage spike to start.

It is too bad that you bought old junk from e-bay.


you probably thought i bought these:
http://upload.wikimedia.org/wikipedia/en/thumb/f/fb/Tanninglamp.jpg/220px-Tanninglamp.jpg

these are what i got (CFLs):
http://www.ebay.com/itm/331138643631

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