Institute Newton C. Braga

Circuit Bench

Astable Multivibrator (CB21104E)
Found in American documentation, this basic circuit uses general purpose transistors. The circuit...
Timer for enlargers (CB8301E)
From the time when photographs developed on paper could be enlarged, this circuit was found in a...
Basic Voltage Comparator LM324 (CB11615E)
In the figure we show how to use an LM324 as a voltage comparator the reference voltage is...