Philips HF3445 User manual (English) - Page 13

FAQ FAQ What should I do if the light doesn't wake me up? When you first start using the Daybreak, consider using the backup alarm or radio as part of your wake mode settings. Be sure you are using a lamp that provides sufficient brightness to light up your entire room. Also, many people find that increasing the duration of the sunrise helps them wake up at the right time. What type of lamp should I use? You should use a lamp that provides enough brightness and diffusion to light up your whole room. Reading lamps or other focused lamps tend to light up one spot only, and you may be facing away from that spot at the time when your body needs to start waking up. What bulb wattage is best? Your room layout and lamp shade can affect the amount of light that reaches you while in bed, but on average, a 100W bulb will provide the best results with dawn simulation. Should I use a special type of incandescent bulb with my Daybreak? You can buy blue-enhanced light bulbs that have neodymium added to the glass. These bulbs can be quite expensive, but are generally higher quality (longer-lasting) and do a better job of color rendering. The color difference between a standard bulb and a blue-enhanced bulb may have an effect on your results, but studies have not been done to prove this. Most dawn simulation studies that have been done with household lamps used 100W standard bulbs. You should consider using a neodymium bulb with your Daybreak. Why can't I use fluorescent lamps with the Daybreak? Most fluorescent lamps are not dimmable because of limitations in the electronic circuitry that powers them. While some specialized fluorescent lamps are dimmable, they cannot be used simulate a sunrise accurately because their lowest intensity is about 20% of full power. An effective sunrise simulation starts from nearly imperceptible levels of light and then slowly ramps up. This scenario is impossible with current fluorescent technology. 24 25