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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AdjusterJan 13, Jan 12, 4. Phototranskstor in or Sign up. You will see that the transistor base lead is not connected, as was suggested in one of my earlier posts. Lastly, I don’t allow my lack of skils to come in between me making my circuit. This was exactly why I asked a circuit diagram.
Let us trash the safety issues as of now. If not, I don’t mind, a little bit of trial-and error can be done.
In another posting I also sent you a link to a data sheet for the L14F1. The friendliest, high quality science and math community on the planet! Jan 14, 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. Do you already have an account? Jan 15, Jan 12, 2. Yes, my password is: Jan 12, 1.
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. No, create an account now. Jan 13, 6. AdjusterJan 12, By the way, could you tell why the resistor is used in the circuit? Using a L14F1 IR phototransistor in a switch. AdjusterJan 15, L1f41 13, 8.
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.
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 photottransistor work, but just doing the soldering. Last edited by a moderator: I suggest that phototransishor look at that because amongst other things it will show you how to connect the device up correctly.
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. 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.
Could you please post a diagram and fuller details of your application? Join Physics Forums Today! 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?
I just suggested a remote control car with it, but I could rather make a simple wireless circuit switching a bulb off and on. 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.
Everyone who loves science is here! This would help against leakage effects and improve turn-off speed, at the expense of lowered sensitivity.
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Jan 12, 5. And never mind the time, my parents decided to buy the phototransistor later. Jan 13, 9. Your name or email address: Jan 13, 7. But then, which one?
Jan 12, 3. Like the earlier one I posted, why couldn’t I just leave one pin left out hanging?