Sensorlytics Video Brief: Photodiodes

This video is a brief introduction to how photodiodes work and how to electrically interface to them using the transimpedance amplifier. Produced by Sensorlytics LLC, www.sensorlytics.com

Category:

Science & Technology

Tags:

• Photodiode
• Transimpedance Amplifier
• Sensor
• Transducer
• Demo
• Sensorlytics

[Sensorlytics]

Thanks Joebro391,

Photodiodes and photoresistors behave quite differently. Photodiodes convert light energy to electrical energy and actually *generates* current and voltage. A photoresistor can only regulate current resulting from an externally applied voltage, by varying its resistance - it does not produce electrical power.

[TiberiusBrast]

Thank you! This was very useful!

[blablablaobla]

@blablablaobla I ask, because the symbols you are using in your schematic differs to the ones I am used in collegue

thanks

[blablablaobla]

Hi,

Awesome video, I got a question: The catode is connected to Ground? or is it a negative voltage, I mean, I am told that in inverse polarization the photocurrent is higher.

[ubuntututorials]

Nice video. What frequency were you using in the square wave demonstration?

[ebird97]

Amazing video!

[DouseRock]

now subs in spanish please :-P

[joebro391]

let me just say that this was a great video, but might you be able to enlighten me to the differences between a photodiode and a photoresistor?? the only thing that i can come up with is polarization; as in, a photodiode has to be put into a circuit a specific way (positive-negative), while with a photoresistor, electricity can flow either way, like a regular transistor. am i close or no? thanks for the info. -Joe