Here is a simple solution to charge your Laptop, Tablet, Notebook etc outdoor. A 12 V 10W Solar panel can very well charge the Laptop battery if a DC – DC Booster module is connected between the Solar panel and the Laptop battery. It is a very good charger if you go for a Picnic site where AC is not available to charge the Laptop. It is cool, make it.
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The only electrical appliance that is switched on continuously is the Fridge and it takes around 50% of the total current consumed in a day. That means, if your daily consumption is 4 units, the Fridge alone takes 2 units. Even the most modern Energy Star type consumes 1.5 units in a day. You can check this easily. Note the meter reading and take another reading after 24 hours. The difference is the Units in a day. Then unplug the Fridge for one day and use other devices as usual. Take the reading after 24 hours. You can see how much unit is consumed by the Fridge in a day. If it is more than 2 units, it is time to replace the Fridge. So to reduce the electricity bill, the only way is to monitor the Fridge. A 10 year old Fridge consumes double power than a new one. By doing some tricks, we can save around 0.5 units per day.
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Power can be defined as the work done in a given time. In mechanical terms, power is indicated in Horse power and in Electrical terms, it is indicated in Watts. The term Horse Power was introduced to denote the power, since the most common source of power in ancient times is the Horse. Let us see the power in a Motor and how Resistivity affects conductance.
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With this tester, you can assess the capacity of Inverter to handle the load. It gives a warning beep, if the inverter load exceeds above its load handling capacity. Inverters are available in different ‘Size ratings’ from 50 VA up to 50000 VA. VA indicates the ‘Size’ (capacity) of the inverter which represents its maximum load capacity. Commonly available inverters are 500 VA, 800 VA, 1000 VA, 1500 VA etc. An inverter needs Peak or Surge power and Typical or Average (Usual) power to handle the load. Peak power is the maximum power that an inverter can supply usually for short time. If the load increases above the rated capacity of the Inverter, it will over load the inverter that may leads to its permanent damage.
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