Institute Newton C. Braga

Rain alarm with the CA3130 (CB21995E)
Using an operational amplifier with FET, this circuit was found in an English documentation from...
Set Reset Flip Flop (CB20675E) Found in a 1968 documentation, this circuit can be applied to any logic. In this case, we have an example for TTL. a href="images/stories/bc/203509352025_002235_0001.gif" target
With the first project we present, a relay is activated in the presence of light. We can use it as...
AC Amplifier CA3080 (CB25132E)
This AC amplifier has a gain of 40 dB. It was found in the May 1988 issue of Radio Electronics magazine....