Institute Newton C. Braga

Circuit Bench

Frequency to voltage converter (CB6961E)
This circuit is from an old Elektor using components that are not currently common. The circuit is...
741 amplifier for phototransistor (CB25522E)
In the figure we have an amplifier using the 741 operational amplifier without the need for a...
Active Subwoofer for Home Theater (CB17632E)
The circuit presented is quite interesting due to the low-pass filter using the integrated circuit...