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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Last edited by a moderator: I suggest that you look at that because amongst other things it will show you how to connect the device up correctly. L14r1 was exactly why I asked a circuit diagram. Jan phototrahsistor, 8. Log in or Sign up. Jan 14, Like the earlier one I posted, why couldn’t I just leave one pin left out hanging?

Could you please post a diagram and fuller details of your application?

Phototransistor L14F1

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 phototrqnsistor. The friendliest, high quality science and math community on the planet! 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.


By the way, could you tell why the resistor is used in the circuit? Join Physics Forums Today!

But then, which one? Jan 13, 6. I just suggested a remote control car with it, but I could rather make a simple wireless circuit switching a bulb off and on.

If not, I don’t mind, a little bit of trial-and error can be done.

phototranssitor Using a L14F1 IR phototransistor in a switch. Jan 12, 5. This would help against leakage effects and improve turn-off speed, at the expense of lowered sensitivity. 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?

So again, I hope the diagram will be posted without further questioning. In another posting I also sent you a link to a data sheet pjototransistor the L14F1. Jan 13, 7. Jan 13, 9. No, create an account now. Jan 12, 4.

Using a L14F1 IR phototransistor in a switch | Physics Forums

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

Yes, my password is: Jan 12, 2. Everyone who loves science is here! My father told the transistor may fry up at excess voltage, but is it right?


Let us trash the safety issues as of now.

Phototransistor L14F1

Your name or email address: Do you already have an account? 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.

AdjusterJan 15, Jan 12, 1. AdjusterJan 12, Lastly, I don’t allow my lack of skils to come in between me making my circuit.

AdjusterJan 13, 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. 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 just doing the soldering. And never mind the time, my parents decided to buy the phototransistor later.

Jan 12, 3. Jan 15,