Institute Newton C. Braga

Circuit Bench

Audio Oscillator 2 (CB12907E)
This circuit, from an old publication, can also use modern transistors. Note that the unit is...
Timed Motor (CB13043E)
The circuit shown in the figure can drive a motor (or other type of load) for a time interval that...
500 Hz to 5 kHz Astable 4001 (CB15510E)
An oscillator whose frequency can be adjusted between 500 Hz and 5 kHz with the use of a...