Photodiode and Op amp Question?
Photodiode and Op amp Question?
(OP)
I’m trying to detect a candle flame. Using a photodiode and op amp. But I’m not sure as to what kind of photodiode and op amp I should be using. If any one has any suggestions as to what brand of components I should use I’m open for your input. These need to be through hole so I can mount them on a breadboard.
Thanks
Thanks





RE: Photodiode and Op amp Question?
Ambient lighting?
TTFN
RE: Photodiode and Op amp Question?
I’m not sure what you mean by Ambient lighting.
RE: Photodiode and Op amp Question?
The more ambient light, the smaller the field of view for the detector and possibly more stringent color filtering.
TTFN
RE: Photodiode and Op amp Question?
The problem you may have is that the photodiode will detect light from any wavelength in its range and will not be able to tell a candle from any other light so the candle will have to be brighter. You will probably have to add optics to increase the light from the candle on the photodiode active area to get sufficient current.
RE: Photodiode and Op amp Question?
Have you considered using a CMOS camera? With some fast optics, you could image capture and then image process to find the flame.
TTFN
RE: Photodiode and Op amp Question?
Irstuff as for the ambient lighting it would be in side a building so I can turn down the lights if needed. And since this is only an experiment the cost of a CMOS camera is out of the question.
RE: Photodiode and Op amp Question?
If this is a prelude to a fire detection system, a visible photodiode will probably not work reliably.
TTFN
RE: Photodiode and Op amp Question?