Institute Newton C. Braga

Circuit Bench

CMOS VFO (CB8090E)
Found in a Popular Electronics from the 90s, this circuit generates signals from 2 Hz to 30 kHz in...
Power Outage Alarm (CB24152E)
This sensitive circuit was found in the August 1971 issue of Radio Electronics magazine. The SCR...
Mixer (CB13030E)
The two-channel mixer shown in the figure is the ideal solution for cases where we need an...