Timeline for Can I use DC-DC step down converter on infrared illuminator LED 5 mm, 940 nm
Current License: CC BY-SA 4.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 5, 2021 at 16:11 | comment | added | Elliot Alderson | The LM317 is not a "DC-DC step-down DC converter", it is a linear regulator. You keep talking about "set it on required voltage"...that's a bad idea. | |
| Sep 5, 2021 at 13:44 | comment | added | MARK | Output Current : 1.5A ( minimum ), 2.2A ( typical value ) Input-output voltage difference (VI-VO): 40Vdc ( max ) Adjustable output voltage range : 1.2 ~ 37V Working temperature : -55 C to + 150 C Current output : 1.5A Voltage Input : 4.2 ~ 40 V Operating temperature : 0 C ~ 125 C Characteristic frequency : 100 (MHz) Module size : 35.6 (mm) x16.8 (mm) Input mode : VIN input positive level , GND input negative Output : VOUT output positive level , GND output negative | |
| Sep 5, 2021 at 13:44 | comment | added | MARK | What if i use LM317 for constant current and voltage or i will buy ready to use LM317 DC-DC step-down DC converter circuit board power and set it on required voltage need on 5 IR LED 5MM, 940MN. ? But I'm gonna use 5v smart phone charger? Here the details of the board Link : youtu.be/iuMngik0GR8 | |
| Sep 5, 2021 at 13:32 | comment | added | Elliot Alderson | Sure, there are many possible circuits. You could use a 12V battery with a resistor of about 20 ohms in series. Or a 5V source with a resistor of about 7 ohms. But you should probably do some research on constant-current LED drivers to find a solution that really meets your needs. | |
| Sep 5, 2021 at 13:18 | comment | added | MARK | How about the 3w infrared led light? Emitted Color: 850nm Infrared IR Viewing Angle: 120 degrees DC Forward Voltage (VF): 1.5-1.7V DC Forward Current (IF): 500-700mA Maximum Pulse Voltage: 2.2V Maximum Pulse Current: 800mA, did you have circuit diagram for it? | |
| Sep 5, 2021 at 12:53 | comment | added | Andy aka | I would say over and over and over and over and over (I got cramp now so I'll stop) | |
| Sep 5, 2021 at 12:48 | history | answered | Elliot Alderson | CC BY-SA 4.0 |