Institute Newton C. Braga

Circuit Bench

Color Code Identifier (CB16353E)
Have you not yet memorized the color code used to identify resistors and capacitors? Do you have...
Low voltage power supply (CB21747E)
Found in a Popular Electronics from May/June 1969, this power supply uses transistors from that...
1 kHz Sine and Square Oscillator (CB13494E)
This circuit is from a 1977 timers Cookbook, but can still be easily assembled with the eventual 3130...