I got this Infrared Emitter & Detector from The Source (Radio Shack in Canada) just for fun **broken link removed**
What's the safe method for connecting the detector when running off of 4AA batteries?
I've found examples of circuits online and they recommend all kinds of different sizes for the resistor.
Maximum voltage and currents
VCEO Collector to emitter: 70V
VECO Emitter to collector: 5V
Ic Collector current: 50mA
Total power dissipation: 150mW
Peak sensitivity wavelength: 850nm
Spectral bandwidth range: 620-980nm
Angle of half sensitivity: +-20deg
This is really cheap stuff with the flat spot on the wrong side on the detector if you follow the directions on the package. but anyway...
I got it to work but it only works well from about 3 centimeters away and I'm curious if it's supposed to work from further?
The IR LED that came in the package is pretty simple to figure out and I used it like any other LED on my breadboard with a 150ohm resistor and it works.
What's the safe method for connecting the detector when running off of 4AA batteries?
I've found examples of circuits online and they recommend all kinds of different sizes for the resistor.
Maximum voltage and currents
VCEO Collector to emitter: 70V
VECO Emitter to collector: 5V
Ic Collector current: 50mA
Total power dissipation: 150mW
Peak sensitivity wavelength: 850nm
Spectral bandwidth range: 620-980nm
Angle of half sensitivity: +-20deg
This is really cheap stuff with the flat spot on the wrong side on the detector if you follow the directions on the package. but anyway...
I got it to work but it only works well from about 3 centimeters away and I'm curious if it's supposed to work from further?
The IR LED that came in the package is pretty simple to figure out and I used it like any other LED on my breadboard with a 150ohm resistor and it works.