Institute Newton C. Braga

Circuit Bench

Operational DC Motor Control (CB13804E)
This control circuit was obtained in a 1971 technical documentation. The operational amplifier can be the...
Darlington Photo Sensor (CB16106E)
The circuit shown in the figure is a more sensitive version of the previous one (CB16105E). Two...
Four-Transistor Timer (CB1261E)
The transistors of this timing circuit may be more modern types such as BC548 and BC558. The...