We experience the effects of energy in the form of heat from a fire or the force of the wind. We cannot see, hear, taste or smell energy, but we still use it in many different ways. From physics, we know that: Energy is the capability to do work. When a light is switched on or a car is moved forward using gas, we experience the conversion of one form of energy into another form of energy, with the help of energy converters. Energy, therefore, is not a material, but a property of bodies. Electrical current is not energy. It carries energy and delivers it to electrical devices. The electrical current transports energy.
• the fischertechnik solar micromotor is small, but powerful. It is operated with 0.5-2V direct current.
• two solar cells 60x60 1.0V 0.44A deliver the power needed to drive the models, or serve as energy converters for energy storage
• one solar gold cap 10F 2.3V, with stands out for its extremely high capacity
• one hydro cell 0.5V-0.9V 0.5A fuel cell that can be used to convert the chemical energy of a fuel (such as hydrogen) into electrical current
• one voltage converter, which transforms the output voltage of a fuel cell from approx. 0.9V to approx. 2.0V
Of course, all of these are perfect for the fischertechnik system, which not only illustrates basic renewable energy issues but also allows students to operate realistic functional models.