Institute Newton C. Braga

Circuit Bench

Solar Frequency Standard (CB21951E)
This solar cell powered circuit generates a standard 100 kHz signal. The circuit is from a 1960...
LED Bargraph (CB10830E)
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...
Audio Oscillator using the 555 (CB11922E)
This circuit produces a good power audio signal, whose frequency is controlled in the...