Institute Newton C. Braga

Circuit Bench

Timer with Relay 14538B (CB18466E)
This timer, like the previous circuits, uses a currently uncommon integrated circuit. The time is...
0 to 12 V Adjustable Power Source (CB16283E)
This ultra-simple adjustable power source is of great use on the bench of any electronics...
Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still common operational amplifier. The power supply does not have to be symmetrical. a href="images/stories/bc/04291029"
Guitar preamp (CB22146E) Found in an English publication from 1989, this circuit uses a still...