This sophisticated moving bar indicator circuit with the LM3915 is from a Radio Electronics magazine from May 1985. The two-channel circuit includes the power supply.
We found this circuit in a 1994 documentation. It can be implemented with the indicated...
This is the name of an interesting lighting effects device for discos, ballrooms or even shop...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...