Institute Newton C. Braga

Presence Detector (CB18741E) The original name of this project found in documentation from the 90s is “ghost hunting”. The circuit uses a not too long stretched plate or wire as a sensor and has its adjustment made by a trimpot. The power i
Presence Detector (CB18741E) The original name of this project found in documentation from the 90s...
Audible warning (CB9204E)
This circuit that generates a special sound was found in a Popular Electronics from the 90s. The...
Touch Volume Control (CB18092E)
With a touch of a sensor, it is possible to turn on or off incandescent lamps. The circuit must...