To understand the world of the electrons and their apparent secrets is ever more important then.  BUSCH experiment boxes show  step for step the co-ordination of electronic building sets.

An Economical Start Set is system 4000. Extensive experiment equipment. Of resistances above condensers up to light-emitting diode and transistors. The detailed instruction book with more than 100 figures and circuit diagrams shows the construction and the functions of more than 80 experiments and device circuits, and other: Burglar alarm transmission system, automatic time switch, quiz-clock, rain warning device, staircase light automat, touch-sensitive button. Timer, remote-controlled electronics-relay. Flashing and flashing-light, egg and fire announcer. Electronic warehouse, occupancy advertisement. Battery tester, electronic dimmer. Attempts from the computer engineering. And a lot more. In addition the basics of the electronics are explained: Stream and tension, the Ohm's law, conductors, semiconductors and non-conductors. Row and parallel circuits. Flip-flops, logical linking and so forth.

Basic castes, from 9 years. Only german description!