An electric bulb filament and you measure it will ever match the stated power. You know that a huge part of that power goes to heat, not light. If you want more light, you can choose energy-saving lamps with fluorescent tube. If you want even more economical fixtures go to Light Emitting Diode (LED) bulbs. If you keep you even in the most need to find fluorescent dyes. Daub the walls with less electricity all the walls glow. But only after a few years we will know how to daub and how are powered.
Incandescent lamps are the cheapest and least reliable lighting. The reason is first profiteering. These lamps are made mandatory with the condition can not work more than 1000-1500 hours. Even once existed industrial agreement between producers of this condition. The second reason is like a purely technical. If Kindle filament smoothly, it should never burn. There is already plenty of technical solutions.
Energy saving lamps aimed to reduce the rate of heating at the expense of B22 lighting. In a sense, they succeed. Here banter in the higher price and the still low reliability of the lamps. A word is compromise. Whether you buy 8 pieces incandescence or one energy to spend the same work period. And now is the time to remember that one thing is more unreliable as more complicated. And when those lights burn first threads of the fluorescent tube, then the frequency of failures comes of a capacitor between the threads of the bubble, etc.
LED lamp lights are at this stage the greatest efficiency. The heat in them at least. Made them in different forms, pedestals, type and number of LEDs, power supply and power. I liked, I bought and I studied in detail this type of lamps (pictured) uses named as Cool / Warm White Light Corn Bulb Lamp. LEDs are far more reliable component of the filament and fluorescent tube. When we have another bonus. These lamps power is as simple and likely to stop working is void. In the energy saving lamps have a complex generator that powered the tube. While the power of these LED lights have a extinguishing RC group, Greece, filter and load resistor. All LEDs are connected in series, as shown in the second picture.
Tensions on the LED group is about 136 V dc, with minor ripple of 100 Hz. If you increase the filter capacitor of 2.2 μF to 10 will be even better. The current through all LEDs is about 60 mA. Heat dissipating lamp is small, but not negligible. The plates on which the LEDs are arranged, are made of aluminum. You should not close the lamp to operate without cooling. The plastic melts. The cap may be different.
Few elements – reliability. LEDs rarely fail. They are 48 or 60 pieces, their type is 5630 (which are indicated dimensions 5.6 to 3.0 mm); high-voltage capacitor is 2,2 μF at 400V with 1 MΩ in parallel; 4 diodes 1N4007; load resistor 10 Ω / 1 W sequentially; quencher group to 220V of 1,8 μF and 1 MΩ in parallel.
I eg 8 lamps 60 W, who every day work around 8:00. This makes about 4 kWh per day; one winter month will have 120 kWh electricity. If you replace all the lamps with LED my bill will fall by 8-10 times. Probably already realized that such single investment in such LED Lamps in the long run will shrink dramatically your account current.