wencuan
Newbie level 2
hai everyone!!
i am currently researching about pulse rate monitor and encounter this site
https://hrsensor.wordpress.com/2008/04/28/sensor-report-reflective-optical-sensor-tcrt1000/
i did an experiment on the circuit and it works but i am wondering why the infra red transmitter is being placed reverse bias and the circuit works?
Any explanations to clear my doubt?
Thank you
Wencuan
i am currently researching about pulse rate monitor and encounter this site
https://hrsensor.wordpress.com/2008/04/28/sensor-report-reflective-optical-sensor-tcrt1000/
i did an experiment on the circuit and it works but i am wondering why the infra red transmitter is being placed reverse bias and the circuit works?
Any explanations to clear my doubt?
Thank you
Wencuan