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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Jan 12, 5. Using a L14F1 IR phototransistor in a switch. AdjusterJan 12, AdjusterJan 15, I just suggested a remote control car with it, but I could rather make a simple wireless circuit switching a bulb off and on.

L14F1 Phototransistor

As a final help, in phototrasnistor 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. In another posting I also sent you a link to a data sheet for the L14F1. Jan 12, 1.


You will see that the transistor base lead is not connected, as was suggested in one of my earlier posts. Jan 12, 3. Jan 12, 4.

Using a L14F1 IR phototransistor in a switch

AdjusterJan 13, Yes, my password is: Lastly, I don’t allow my lack of skils to come in between me making my circuit. If not, I don’t mind, a little bit of phototrasnistor error can be done.

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 phoyotransistor. This would help against leakage effects and improve turn-off speed, at the expense of lowered sensitivity.

Last edited by a moderator: Jan 13, 6.

No, create an account now. Jan 15, The friendliest, high quality science and math community on the planet! I believe it is the pin that juts out a little bit, which should be the base pin I have marked my guess in the photo attached.

By the way, could you tell why the resistor is used in the circuit? Jan 13, 9. Jan 13, 7. Let us trash the phitotransistor issues as of now. 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.


Phototransistor L14F1

But then, which one? 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. Jan 13, 8. Join Physics Forums Today!

Do you already have an account? I suggest that you look at that because amongst other things it will show you how to connect the device up correctly. My father told the transistor may fry up at excess voltage, but is it right?

So again, I hope the diagram will be posted without further questioning.