L14G2/G3 is an NPN phototransistor. It acts as a photodetector in the sense that it can convert the incident light into electric response. They are commonly used. L14G2 is an NPN photo-transistor. It acts as a photo-detector in the sense that it can convert the incident light into electric response. They are commonly used as . Buy L14F1 with extended same day shipping times. View datasheets, stock and pricing, or find other Phototransistor.

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But then, which one? Your name or email address: Join Physics Forums Today!

No, create an account now. Jan 12, 1.

AdjusterJan 13, Like the earlier one I posted, why couldn’t I just leave one pin left out hanging? By the way, could you tell why the resistor is used in the circuit?

If not, I don’t mind, a little bit of trial-and error can be done. And never mind the time, my parents decided to buy the phototransistor photoransistor.

I suggest that you look at that because amongst other things it will show you how to connect the device up correctly. Phototransistpr who loves science is here! Last edited by a moderator: Yes, my password is: AdjusterJan 15, The friendliest, high quality science and math community on the planet!


Phototransistor L14F1

Jan 12, 4. I believe it is the pin that juts out a little bit, which should be the phototransitor pin I have marked my guess in the photo attached.

Jan 14, So again, I hope the diagram will be posted without further questioning. Jan 15, You will see that the transistor base lead is not connected, as was suggested in one of my earlier posts. Jan 13, 9. Jan 12, 2.

L14F1 Phototransistor

My first guess would be that the base could be left open, but depending on the application it may be better to connect a resistor from the base to the emitter. In another posting L1f41 also sent you a link to a data sheet for the L14F1. As a final help, in the picture of the phototransistor product I have attached, please look at it and re-post it to me if you can identify the base pin. Jan 13, 8.

Could you please post a diagram and fuller details of your application? AdjusterJan 12, I would guess that by 3-pin you mean a device which has the base connection brought to an outside pin, since LIF41 is a photo-darlington which has the input base brought out? Do you already have an account? I just suggested a remote control car with it, phototrnasistor I could rather make a simple wireless circuit pbototransistor a bulb off and on.

Jan 12, 3.

Phototransistor L14F1

Lastly, I don’t allow my lack of skils to come in between me making my circuit. Log in photohransistor Sign up. Secondly, I don’t want to make more sensitive arrangements, for I can easily afford to point the laser pointer on the phototransistor, even if impractical.


This was exactly why I asked a circuit diagram. Let us trash the safety issues as of now. I believe soldering shouldn’t be much of a safety concern as I have used them before and have gone for a robotics class wherein we had to solder the parts provided onto the provided PCBs in a way, they didn’t explain how they work, but phoyotransistor doing the soldering.

Jan 12, 5. Jan 13, 6. Hello univeruser Since you have said that you don’t want to make any more sensitive arrangements, here is a simple diagram adapted from what you originally uploaded, showing the photodarlington transistor driving a LED – in this case, the ohm resistor is needed.

Using a L14F1 IR phototranskstor in a switch.

photootransistor Jan 13, 7. My father told the transistor may fry up at excess voltage, but is it right? This would help against leakage effects and improve turn-off speed, at the expense of lowered sensitivity.