Institute Newton C. Braga

Circuit Bench

General purpose transistor stage (CB19876E)
This amplifier step for small signals can use any general-purpose transistor like the BC548. The...
Opto control for triac (CB20552E)
Found a documentation for PC from 1992, this circuit is indicated for the English power grid of...
Diode Coupling Multivibrator (CB18243E)
The transistors in this circuit from an old documentation can be replaced by equivalents like the...