Electronics Online

Fluorescent lamps are now widely used because they have a much lower power consumption than equally bright incandescent lamps. They are available in light colors sunlight, cool white and warm white.

Fluorescent lamps Design and function
Fluorescent lamps are one of the gas discharge lamp. It consists of a glass tube, which with mercury vapor and an inert gas such as argon or krypton filled. The inside of the glass tube coated with phosphor. This converts the light generated in the operation of the ultraviolet light in a longer wavelength, ie, into visible light.

Batteries must be carefully handled. Here I have briefly summarized some important rules about handling batteries properly ..

Battery care tips

Never buy batteries for stock!
During long storage battery has a certain self-discharge, and this will increase at higher temperatures. Batteries are depleted (also alkali-manganese batteries!) May leaks, it is partly demonstrated by the fact that it has been stored in the contact of a white powder (potassium hydroxide). It is corrosive and corrodes all the metal parts that come into contact with it.

The rectified voltage from the rectifier diode is not constant, because by a sine form and also from the tapped voltage of direct current affected hum. By installing a capacitor (usually elco) between plus and minus, the hum voltage will be reduced, this is because during pauses hum voltages, the capacitor provide the current and during each half period its will be charged. Hum voltage is determined by the capacity of the capacitor and current are used, it is according to the following rules: