Institute Newton C. Braga

Circuit Bench

AC Operational Amplifier with the 741 (CB11924E)
The gain of this alternating voltage amplifier is 100 times, depending on the 1M-ohm resistor, which...
Field Strength Meter (CB22329E)
This simple field strength meter is from a transistor book from the 60's. The transistor is made...
Analog Data Isolator (CB6523E)
We found this circuit in an 80's Electronic Design. It makes use of couplers of the time that can...