Institute Newton C. Braga

Circuit Bench

Digital Switch Mixer (CB4919E)
This circuit was obtained from an ancient American documentation, but appears elsewhere in this...
Stepper Motor Control UCN4202 (CB4860E)
This is the conventional application of the UCN4202 to control a 12 V stepper motor with current...
Level Indicator (CB1546E )
The operational amplifier can be of any type in this circuit, found in a 1974 publication. The...