Hello,


My lamp had a polarity and some says that if you put the terminals incorrectly into the battery, there is a possibility that the lamp will explode or something. OK now, is it true?

My lamp is not dimmable. What does it mean?

 

With LEDs maybe, but not with a conventional incandescent light bulb.

 

Hello Bill Marsden.

My lamp is compact fluorescent lamp if i remember correctly. yes it is.

anyway, can you explain me whats not dimmable means in lamps? O_O

 

Basically a dimmer circuit makes the light brightness adjustable, it is called a dimmer. An AC version uses a device called an SCR (silicon controlled rectifier). My PWM article will work on LEDs and incandescent lights OK. A florescent light works differently than both of the others. It is a low pressure gas with two incandescent filaments on the ends. It takes high voltage to start, but low voltage to keep going, so it is a popular portable light.

If you are interested in florescent lights I'll go into more detail. They are closely related to neon lights, but there are significant differences. A white LED is also related to a florescent light too, both use a phosphore chemical that glows in the presence of blue or ultraviolet.

 

Bill_Marsden, thank you for the info you gave.

Now, can you say to me what is the "+" and "-" terminal of a cfl???

 

In and of themselves flourescent lights don't really have a polarity, however, they use solid state electronics to drive them, which definately does.

Have you read the Wikipedia article on CFLs?

http://en.wikipedia.org/wiki/Compact_fluorescent_lamp

Personally I believe flourescent lights days are numbers, they will be replaced with LEDs.