Institute Newton C. Braga

Circuit Bench

Binary Demonstrator (CB24177E)
This TTL instructional circuit appeared in the February 1972 issue of Radio Electronics magazine. 5 V...
Low Current Photo Trigger (CB14664E)
The Schmitt optical trigger current in the dark is low. The transistors can be the BC548 and the...
Relay PNP Driver (CB11196E)
This circuit was obtained in a publication of my own (Newton C. Braga) used to excite relays up to...