Institute Newton C. Braga

Circuit Bench

Alarm siren (CB26231E)
This circuit with two 555s was found in the Encyclopedia of Electronic Circuits volume 5 of 1995....
Manually Triggered VCO 4046 (CB25758E)
We found this circuit with the CMOS4046 in the August 1994 Electronics Now magazine. The circuit is...
Transistor Hartley Oscillator (CB4576E)
This circuit consists of a single Hartley oscillator using a bipolar transistor that can generate...