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 Make it a practice to turn off the lights in your room - Tips To Save Energy Lots of people today leave their bedrooms without turning the lights off. Although lights do not consume much electricity, lots of energy would be wasted if you constantly left them turned on for the most parts of the day, even if you are not inside the room. Thus, make it a practice to turn off the lights, so that you can save energy.  Make it a practice to turn off the lights in your room - Tips To Save Energy

Single Phase Induction Type Energy Meter Single phase induction type energy meters are extensively used for the measurement of electrical energy in single phase A.C circuits. One can find such meters installed in homes. It is also called as single phase watt-hour meter. Single Phase Induction Type Energy Meter Principle: torque is produced to rotate the disc is due to interaction of two fluxes. Since the e.m.f induced in the disc by induction, this instrument operates on A.C only. Construction: The below fig shows the various parts of a single phase induction type energy meter. It consists of a shunt magnet, a series magnet, a rotating disc, a brake magnet and a counting mechanism. The shunt magnet consist of a number of M shaped iron laminated core wound with a fine wire of many turns i.e. coils and is connected across the supply. The shunt coil carries a current proportional to supply voltage and is known as Pressure coil . The flux produced by shunt magnet lags behind the supply v...

Ambient light, thermal gradients, vibration/motion, or electromagnetic radiation can be harvested to power electronic devices. At the same time, all energy-harvesting-based systems need energy storage for times when the energy cannot be harvested (e.g., at night for solar-powered systems). Rechargeable batteries ‒ known as “secondary” cells to differentiate them from “primary” or single-use cells ‒ are usually specified for this task. This article will examine the various secondary cell technologies available to energy harvesting system designers looking for a cost-effective and powerful battery solution. Primary and secondary batteries contain the same basic structure of a cathode, an anode, an electrolyte for moving charge between the terminals, and a means to separate them. Secondary cells are distinguished by the type of rechargeable chemistry employed, such as nickel-cadmium or lithium-polymer, or solid-state thin film. [ ]

Some relays will become warm if they remain energized for some time. The circuit shown here will actuate the relay as before but then reduce the ‘hold’ current through the relay coil current by about 50%, thus considerably reducing the amount of heat dissipation and wasted power. The circuit is only suitable for relays that remain on for long periods.   Circuit diagram:   Relay Coil Energy Saver Circuit Diagram   The following equations will enable the circuit to be dimensioned for the relay on hand: R3 = 0.7 / I Charge time = 0.5 × R2 × C1 Where I is the relay coil current. After the relay has been switched off, a short delay should be allowed for the relay current to return to maximum so the relay can be energized again at full power. To make the delay as short as possible, keep C1 as small as possible. In practice, a minimum delay of about 5 seconds should be allowed but this is open to experimentation.   The action of C2 causes the full supply voltage to appear briefly ac...

Every innovations starts from a simple day to day life problem like you watching IPL in TV and suddenly the current shuts off, fortunately you will find another way to watch the match via mobile network. Similarly, I too had faced a problem of frequent drains in mobile battery while travelling somewhere in bus or while walking on the endless roads to our destination during hot sunny day. There are many innovative projects on wind powered mobile charger which looks huge enough to produce 5v dc but they weighs more and bulky. I gathered some information from them for my project and started with a basic 12 volt DC motor. I used it to generate power for my mobile phones,and it ended up with failure.Then I used an feedback amplifier circuit but it was so huge. Read More.....