User manual
19
3. Storing Energy
The principle of energy storage with electrical current that cannot be perceived with
our senses can be compared and explained with a principle that we can observe in
water: A water container is lled with water from a tap. The water can be taken out
again at a later time.
Fig. 015: Principle of energy storage, illustrated by a water tank
The »energy storage« has different forms in the electronic world. The learning
package contains an electrolytic capacitor. The storage effect can be illustrated
well with this. The benet of the capacitor storage is in its very long service life.
As compared to the rechargeable battery, the storage capacity is low, which has
the benet for experiments that the principle of storage happens in a short period
that can be observed well. Comparison: The water tap lls only a small jar. That is
much faster than to ll a larger pool.