Heart rate detection circuit diagrams

Posted on Mar 28, 2007

Cadmium sulfide photoresistor CD1 fingertip can be detected through the filter, CD1 form the sense amplifier feedback network, a part of the sense amplifier ICA produces weak s

Heart rate detection circuit diagrams
Click here to download the full size of the above Circuit.

ignals, these signals may be further amplified ICB. These signals are often used and user-adjustable threshold for comparison, comparator ICD trigger piezoelectric buzzer PZ1 the switch.

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