Free receiving electricity is not always connected with deception. If the amount of energy which needs to be developed is small, or it is about experiment, it is free of charge possible to receive electricity and without violation of the law.
Instruction
1. Buy small lamp with the built-in electric generator. Try not to run into fake: sometimes are sold under the guise of such lamps normal, with batteries, and the generator is fake. Do not confuse with them the combined lamps where by means of the switch it is possible to choose diet: from batteries or from the generator. Having accurately sorted lamp, remove outside of wire from the generator, then collect the device upside-down. Now, having connected outside the rectifier with the filter, you can produce electricity for the low-power loadings suitable on supply voltage. If instead of lamp the bicycle with the generator is used, the rectifier should be used one-half-period as one of conclusions of the dynamo is connected to bicycle frame.
2. Take the electromotor from children's toy and get the propeller with a diameter about 15 centimeters on its shaft. On wind this design will develop the electric power. Though tension at the output of the motor and constant, but it is pulsing. It is simple to connect the filter condenser parallel to such generator insufficiently, the one-half-period rectifier, the warning capacitor discharge via the engine in pauses between impulses is necessary. If from the device it is going to charge accumulators, the rectifier is also necessary (it will replace the relay of reverse current) and also the resistor or bulb for restriction of current of charge to permissible value will be required.
3. The solar battery having high efficiency in house conditions cannot be manufactured. It is only possible to make ineffective photo cell on copper oxide, or to buy the ready silicon solar battery, or to connect in parallel many diodes in the glass body which is well passing light (for example, D2 type). One solar element develops voltage about 0.5 V, and the maximum load current depends on the area of the device. To receive bigger current, connect elements in parallel and to receive bigger tension — consistently. Also the combined, serial-parallel connection allowing to increase both tension, and current is allowed. If from the solar battery the accumulator, as well as in the previous case is charged, provide the diode, the warning discharge of the storage battery through solar, when there is no light and also the current-limiting resistor or bulb.
4. To make the thermocouple, take two copper delays, calcinate each of them in candle flame that on them the oxide layer has turned out, then fix them on the fire-resistant holder cross-wise so that they hardly concerned each other in point of intersection. Heat one of pro-reducing dies until red, and leave the second cold — tension will appear. If to connect several dozen such thermocouples are consecutive, from them it will be possible to feed LED and if to heat them the burning garbage, then electricity produced by them will be free. However, the efficiency of such installation will turn out extremely low.