Dear friends,

I would like to know, What is minimum pulse width required to Glow LED via Microprocessor? and What is minimum pulse rate to steady (without flickering) display of it?

Thanks & Regards,

Shailesh C Patel

 

I don't know about continuous PWM, but I know that isolated pulses of about 2 msec. can be seen under normal indoor ambient lighting conditions. We used pulses like that for a battery-powered application that needed to blink for up to 3 months on a couple of AA batteries.

I recommend that you set up an experiment for your particular application and just see for yourself. It is easy enough to do, and it will be a lot more relevant than asking for random opinions.

Robert Scott
Real-Time Specialties
Embedded Systems Consulting

 

Depends entirely on the current and about 70 Hz.

Regards

cww