Institute Newton C. Braga

Circuit Bench

Sophisticated Audible Logic Probe (CB13789E)
The circuit presented is a documentation for radio amateurs from 1978. Implemented with common CMOS...
Direction Indicator (CB13966E)
The circuit shown serves as a direction indicator or arrow for bicycles, robots and other...
Touch Volume Control (CB20311E)
We found this circuit in an old practical publication. The circuit is still viable today and the...