Institute Newton C. Braga

Circuit Bench

Universal Crystal Test (CB21786E)
In a modern version this circuit can use an LED in series with a resistor in place of the lamp. The...
100 kHz Oscillator (CB22379E)
This is the single-sourced version of the previous oscillator. Frequency can be changed by...
10 W amplifier TDA2870 (CB19162E)
This circuit is from the documentation of the 90s. Thus, the integrated circuit used is not common...