| Lautstärkeeinstellung mit Stufenschalter
| Lautstärkeeinstellung mit Stufenschalter
| Electret-Mikrofon-Verstärker (BC559C, BC549C)
| CMOS-Rauschgenerator und Terzrauschen (Audio)
| Babyphon (Anwendung des Lichtnetz-Interkom aus Oktoberheft 77)
| Elektronisches Labyrinth (196 LEDs)
| Another project for which a free printed circuit board is being offered, this cir- cuit was first featured in the July/ August...
| This simple little circuit can be used to make an amusing musical toy in the form of a drum which, when rolled along the ground, will...