L14F1 datasheet, L14F1 pdf, L14F1 data sheet, datasheet, data sheet, pdf, Fairchild Semiconductor, HERMETIC SILICON PHOTODARLINGTON. L14F1 datasheet, L14F1 circuit, L14F1 data sheet: FAIRCHILD – HERMETIC SILICON PHOTODARLINGTON,alldatasheet, datasheet, Datasheet search site for. Part Number: L14F1, Maunfacturer: Motorola, Part Family: L1, File type: PDF, Document: Datasheet – semiconductor.

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L14F1 Datasheet PDF

Nice circuit, but a few concerns. Jan 12, 5. Sign In Sign Up. It is built around datashret IC NE wired as an astable multivibrator. Jan 12, 2.

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Last edited by a moderator: The amplitude would vary with distance and other factors such as the angle of arrival of the IR beam at sensor L14F1.

AdjusterJan 15, Jan 15, I datasheeh 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. 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.


Everyone who loves science is here! Such appliances already have IR controls and their receivers are line powered. A power supply would be much more convenient, no battery to change.

Datashwet remote controls around us, use IR for signal transmission. If the input voltage is less than or equal to 2V, or more than or equal to 4V, the output goes low. That means its output goes high if it is initially low and vice versa every time it is clocked.

L14F1 Datasheet (PDF Download) 4/4 Page – Fairchild Semiconductor

By the way, could you tell why the resistor is used in the circuit? Jan 12, 3. And wouldn’t RF make more sense? You need to be a member dataaheet order to leave a comment. Which specific appliances will benefit from IR control?

L14F1 Datasheet (PDF Download) 1/4 Page – Fairchild Semiconductor

Like the earlier one I posted, why couldn’t I just dstasheet one pin left out hanging? AdjusterJan 12, Jan 13, 7. Jan 13, 9. 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. Yes, my password is: Do you already have an account? If not, I don’t mind, a little bit of trial-and error can be done. Jan 12, 4. Using this circuit, you can remotely control the switch-on and switch-off operation of your AC mains operated home appliances.


Using a L14F1 IR phototransistor in a switch. The equivalent photo-voltage appears across resistor R4.

Join Physics Forums Today! My father told the transistor may fry up at excess voltage, but is it right? It consists of phototransistor L14F1 T1 datasheet: AdjusterJan 13, Jan 13, 8. Jan 12, 1. Sign in Already have an account?

I don’t mean to malign your circuit, that’s fine. But, where would someone use it? The output of the comparator goes low, which toggles the flip-flop IC4 and transitor T5 conducts.

Your name or email address: Secondly, I don’t want to make more sensitive arrangements, datxsheet I can easily afford to point the laser pointer on the phototransistor, even if impractical.