The first contribution is about The Neckermann 150 in 1 project kit.
This kit came in a nice wooden case with locks on both sides. When opening the lid, chains on both sides hold the top lid. Very nice.
This kit was also distributed by Gakken and Lafayette.
It has plenty of fun electronic stuff inside, Lots of resistors, transistors, radio circuits,solar cell, integrated circuit and many more.
Since the manual lacks detailed information about the circuits, I decided to rewrite this manual and make many improvements to the circuits. Even new unpublished circuits will be handled here. I will also include measurements and formulas so you will be able to gain better understanding of the circuits.
Have fun
A reflex radio : a very sensitive AM radio.
Gakken, Lindy, Neckermann, Maxitronix and Science Fair kits 