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3 results for tags led x
pwm with wiringPi Python? - Raspberry Pi Forums
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- https://www.raspberrypi.org/forums/viewtopic.php?t=25679&p=238087
dimmable elec electroboat led python rpi
10 X G4 Ampoule LED 5050 SMD 12LEDs lampe DC12V Blanc Chaud 360 Degree Replace Halogen Lamp g4 led g4 light lamp corn|ampoule led|ampoule led g4led ampoule - AliExpress
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- https://www.aliexpress.com/item/32290210910.html?aff_fcid=6fac08ef4a004de28ae699c4a8c42c88-1629984219197-03045-_APoqRz&tt=CPS_NORMAL&aff_fsk=_APoqRz&aff_platform=shareComponent-detail&sk=_APoqRz&aff_trace_key=6fac08ef4a004de28ae699c4a8c42c88-1629984219197-03045-_APoqRz&terminal_id=9b9970c6c1ec4d618596fe2c216db3d6
12v ampoule bateau boat brico elec electroboat led
Note: Mémo electro
Loi d'ohm appliquée pour calcul résistance:
U= R x I donc
R = U / I et
I = U / R

Calcul de la chute de tension:

U = Upower - Useuil ex: 12v - 2.74v (led bleue) = 9.26v donc R = 9.26 / 0.02A = 463 Ohms
Prendre la valeur juste au dessus...
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- https://shaarli.youm.org/?ihQvCQ
calculs diy elec formules intensité led résistance tension
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