![batteries - 9V powering to the safest maximum brightness of 4 IR LEDs in series - Electrical Engineering Stack Exchange batteries - 9V powering to the safest maximum brightness of 4 IR LEDs in series - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/GFGGz.png)
batteries - 9V powering to the safest maximum brightness of 4 IR LEDs in series - Electrical Engineering Stack Exchange
![Powering modulated IR LEDs with more current than Arduino outputs can supply - General Electronics - Arduino Forum Powering modulated IR LEDs with more current than Arduino outputs can supply - General Electronics - Arduino Forum](https://aws1.discourse-cdn.com/arduino/original/4X/0/4/7/0479a965d641921971674bb48f60f547de92b227.gif)
Powering modulated IR LEDs with more current than Arduino outputs can supply - General Electronics - Arduino Forum
![Surface Mount Package Type Ir Transmitter And Ir Receiver 850nm 940nm 5050 Smd/smt Ir Led Chip Diode - Buy Ir Transmitter,Ir Receiver,Smd Ir Led Product on Alibaba.com Surface Mount Package Type Ir Transmitter And Ir Receiver 850nm 940nm 5050 Smd/smt Ir Led Chip Diode - Buy Ir Transmitter,Ir Receiver,Smd Ir Led Product on Alibaba.com](https://sc02.alicdn.com/kf/H067b076809004b9cb42dc23b5466d257T/202443892/H067b076809004b9cb42dc23b5466d257T.png_.webp)
Surface Mount Package Type Ir Transmitter And Ir Receiver 850nm 940nm 5050 Smd/smt Ir Led Chip Diode - Buy Ir Transmitter,Ir Receiver,Smd Ir Led Product on Alibaba.com
![Energy resolution (FWHM) at 662 keV versus IR LED forward current at... | Download Scientific Diagram Energy resolution (FWHM) at 662 keV versus IR LED forward current at... | Download Scientific Diagram](https://www.researchgate.net/publication/338725219/figure/fig2/AS:849957632360451@1579657099497/Energy-resolution-FWHM-at-662-keV-versus-IR-LED-forward-current-at-different-operating.png)