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 13, 8. 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?

L14F1 Phototransistor

I just suggested a remote control pbototransistor with it, but I phototransostor rather make a simple wireless circuit switching a bulb off and on. Yes, my password is: By the way, could you tell why the resistor is used in the circuit?

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.

This was exactly why I asked a circuit diagram. This would help against leakage effects and improve turn-off speed, at the expense of phototransisror sensitivity. Jan 12, 1. Jan 13, 7. Could you please post a diagram and fuller details of your application?


AdjusterJan 13, And never mind the time, my parents decided to buy the phototransistor later. Jan 13, 9.

Like the phototranskstor one I posted, why couldn’t I just leave one pin left out hanging? As a final help, in the picture of the phototransistor product I have attached, please look phototranssitor it and re-post it to me if you can identify the base pin.

If not, I don’t mind, a little bit of trial-and error can be done. Last edited by a moderator: Everyone who loves science is here! Jan 12, 4.

The friendliest, high quality science and math community on the planet! Your name or email address: So again, I hope the diagram will be posted without further questioning. AdjusterJan 12, No, create an account now. Log in or Sign up. My father told the transistor may fry up at excess voltage, but is it right? Jan 13, 6. Lastly, I don’t allow my lack of skils to come in between me making my circuit.

Jan 15, 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.

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Jan 12, 3. 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 phltotransistor the soldering.


phototrnsistor Jan 14, Join Physics Forums Today! Let us trash the safety issues as of now. Using a L14F1 IR phototransistor in a switch. I suggest that you look at that because amongst other things it will show you how to connect the device up correctly. Jan 12, 2.

AdjusterJan 15, But then, which one? Do you already have an account? Hello univeruser Since you have said that you don’t want to make any more sensitive arrangements, here is a simple phototeansistor adapted from what you originally uploaded, showing the photodarlington transistor driving a LED – in this case, the ohm resistor is needed. Jan 12, 5. 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.

In another posting I also sent you a link to a data sheet for the L14F1. You will see that the transistor base phktotransistor is not connected, as was suggested in one of my earlier posts.