Found in a documentation from the 90's, this circuit uses only one integrated circuit. The resistors in series with the LEDs depend on the power that can be between 5 and 12 V.
This gain 10 CMOS op amp was found in the May 1993 issue of Electronics Now magazine. It is...
This audio oscillator circuit was found in a 1992 publication. In the original article it is...
This experimental circuit for moving a stepper motor was found in a 2002 documentation. However, given...