I am confused. I am planning to build a simple 2Watt solar system to power some lights in my house. . I wonder if it is possible to power up a 2Watt bulb using 2Watt solar power?2. Normally, when we are reading the power rating of a bulb, we will read the wattage, so what about the voltage and current rating?3. If the current is insufficient, will the bulb light up?I am having a solar panel that can output 2W power but I am not sure about the output voltage, how can I find out about the current? I am getting really confused.
. Practically no. You have to account for startup current, and losses in the system. Ideally you would size your solar planel to provide the power you need to charge batteries in the day, for your needs at night. 2. Watts=Volts times Amps Really you just need to match the load and supply for volts, and make sure the supply has enough capacity to run your load. Current will take care of itself., in that the load will take what it needs to do its work. 3. It will bring the voltage down, causing the light to be dimmer.
Unlikely - at least not a full brightness. You have to match voltages. If your panel is 2v at amp, it won't run a 20v bulb that runs at /0 amp. You're also going to lose power in the wiring and other components that means the 2w panel won't really deliver its full rating. And I'm also guessing that the 2w of the panel is only under full, bright sunlight, so any lessening of the light; clouds, haze, fog, dust, will lessen the power available.
