Institute Newton C. Braga

Circuit Bench

500 kHz to 10 Mz XTAL TTL Oscillator 7402 (CB16098E)
This circuit differs from the previous ones by using the 7402, which consists of 4 two-inputs NOR...
Cardiac Monitor 2 (CB10962E)
This circuit was found in a 1987 magazine. It measures monitors the heartbeat through electrodes. The...
Narrowband VCO (CB25248E)
Using the 4046 PLL integrated circuit, this circuit generates signals from 60 Hz to 1.4 kHz via...