Sign Up

Sign Up to our social questions and Answers Engine to ask questions, answer people's questions, and connect with other people.

Have an account? Sign In
Continue with Facebook
Continue with Google
or use

What is the capital of Egypt? ( Cairo )

Have an account? Sign In Now

Sign In

Login to our social questions & Answers Engine to ask questions answer people's questions & connect with other people.

Sign Up Here
Continue with Facebook
Continue with Google
or use

What is the capital of Egypt? ( Cairo )

Forgot Password?

Don't have account, Sign Up Here

Forgot Password

Volt.Tech

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

Have an account? Sign In Now

You must login to ask question.

Continue with Facebook
Continue with Google
or use

What is the capital of Egypt? ( Cairo )

Forgot Password?

Need An Account, Sign Up Here

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

volt.tech Logo volt.tech Logo
Sign InSign Up

volt.tech

volt.tech Navigation

  • Home
  • About Us
  • Contact Us
Search
Ask A Question

Mobile menu

Close
Ask a Question
  • Tags
  • Category
    • Amplifiers
    • Passives & Protection
    • Clocks & Timing
    • Diodes & Rectifiers
    • FPGAs & PLDs
    • Interface ICs & Transceivers
    • LEDs & Optoelectronics
    • Memories
    • MEMS & Sensors
    • Microcontroller
    • Power Management
    • RF & Microwave
    • Security & Smart Card
    • Motor Drivers
    • Wireless Connectivity
  • Groups
  • Add group
  • Badges
  • Help
  • Home
  • About Us
  • Contact Us
Home/led

Tag: led

LED(Light Emitting Diode) is a simple diode that emits light when current goes through it

volt.tech Latest Questions

Alex thomas
  • 0
Alex thomas
Asked: February 8, 2023In: LEDs & Optoelectronics

Which IC has “HVLED01A” marking code?

  • 0

Hi, I have an IC on the side which is written” HVLED01A” on it and I want to know its output number. I wonder is equal to the” HVLED001A” output number or if it’s another IC? Thank you in advance.

Hi, I have an IC on the side which is written” HVLED01A” on it and I want to know its output number.

I wonder is equal to the” HVLED001A” output number or if it’s another IC?

Thank you in advance.

Read less
codehvled01aICledoptoelectronics
  1. vikas Nagpal
    Added an answer on February 9, 2023 at 4:27 pm

    Welcome, to the community! yes, I can confirm the HVLED001A uses the device marking HVLED01A. Good luck! If the problem is resolved, please mark this content as answered by selecting Select as best,  This will help other users find that answer faster. Thank You

    Welcome, to the community!

    yes, I can confirm the HVLED001A uses the device marking HVLED01A.

    Good luck!

    If the problem is resolved, please mark this content as answered by selecting Select as best,  This will help other users find that answer faster.

    Thank You

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: January 30, 2023In: LEDs & Optoelectronics

Can LED2472G be applied as a shift register to drive signal relays?

  • 0

Hello, Can LED2472G be applied as a shift register to drive signal relays with a coil current of <30mA? Can they be applied as general shift registers too? Thanks!

Hello,

Can LED2472G be applied as a shift register to drive signal relays with a coil current of <30mA? Can they be applied as general shift registers too?

Thanks!

Read less
ledled2472goptoelectronicsregistersignal relays
  1. Alex thomas
    Added an answer on January 31, 2023 at 11:57 am

    Welcome, to the community! Well, LED2472G is a move register, but it can simply be used as similar to a limited extent the individual outputs (bits) are actually constant-current LED drivers, so they aren't actually able for sense purposes. But of course, you can control the loads connected to the iRead more

    Welcome, to the community!

    Well, LED2472G is a move register, but it can simply be used as similar to a limited extent the individual outputs (bits) are actually constant-current LED drivers, so they aren’t actually able for sense purposes. But of course, you can control the loads connected to the individual outputs logically in the same way as a shift register. Only the serial output is directly similar to a classic shift register.

    Still, one could imagine using LED2472G to drive 30mA relays, indeed if this doesn’t correspond to the original purpose. But you mustn’t forget the usual free-wheeling diodes, which due to the unspecified avalanche energy should better be Schottky diodes because only they’re fast enough. Evenultra-fast diodes with a blocking time of 10.20 ns are probably too slow not to damage the respective LED driver- at least nothing guarantees that.

    Does it answer your question?

    Regards

    Alex

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
vikas Nagpal
  • 0
vikas Nagpal
Asked: January 6, 2023In: Power Management

How to Test LED2000 Circuit Parameter Measurement?

  • 0

Hii, I’ve built a sample board of a 2A colorless LED driver applying the LED2000 move-down converter with a single LiIon battery as the power source. Everything seems to be solved as it should, but I would like to try the ...Read more

Hii,

I’ve built a sample board of a 2A colorless LED driver applying the LED2000 move-down converter with a single LiIon battery as the power source.
Everything seems to be solved as it should, but I would like to try the circuit more thoroughly to ensure the design is robust.

Would anyone have pointers on how to test the circuit, what parameters to measure, and what warning signs to look for that may indicate that something isn’t performing optimally?

Thanks, Vikas

Read less
batterycircuitledLED2000liionpower
  1. nidhi singh
    Added an answer on January 7, 2023 at 10:24 am

    Hi, If you have a DC-coupled Current inquiry you can cover Inductor Current to check if it isn't working in the saturation region. Still, also you can check the switching pin with a voltage inquiry just to see a perfect waveform and measure the right switching frequency. Let me know. Nidhi Singh

    Hi,

    If you have a DC-coupled Current inquiry you can cover Inductor Current to check if it isn’t working in the saturation region. Still, also you can check the switching pin with a voltage inquiry just to see a perfect waveform and measure the right switching frequency.

    Let me know.

    Nidhi Singh

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
Alex thomas
  • 0
Alex thomas
Asked: November 25, 2022In: LEDs & Optoelectronics

Controlling WS2812B LED Strip With STM32?

  • 0

Hello, I am new to STM32 and trying to learn exciting stuff. I want to light a single LED from my WS2812B strip. For example, I’ll choose the 6th LED on my computer, and the 6th LED on the strip will light ...Read more

Hello,

I am new to STM32 and trying to learn exciting stuff. I want to light a single LED from my WS2812B strip.

For example, I’ll choose the 6th LED on my computer, and the 6th LED on the strip will light up.

But I am not sure where to start. How can I access to single LED address? And how to get it to work with STM32?

Thanks in advance.

Read less
ledoptoelectronicsstm32stripws2812b
  1. vikas Nagpal
    Added an answer on November 29, 2022 at 10:05 am

    Welcome, to the community! The question of WS2812 has already been discussed here many times. The thread How to use HAL DMA to generate PWM on P- NUCLEO- WB, for example, also deals with it and refers to a Github driver from Tilen Majerle and a HAL example from Martin Willner. Maybe that will help yRead more

    Welcome, to the community!

    The question of WS2812 has already been discussed here many times. The thread How to use HAL DMA to generate PWM on P- NUCLEO- WB, for example, also deals with it and refers to a Github driver from Tilen Majerle and a HAL example from Martin Willner.

    Maybe that will help you?

    Regards

    Vikas

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
cleaneatzkitchen
  • 0
cleaneatzkitchen
Asked: November 8, 2022In: Wireless Connectivity

How to use LED Control PWM in low speed mode?

  • 0

Hi! I’m applying the LED Control (LEDC) PWM to control the servo motor, it worked well. And now I need to control further than 8, I’ve checked the ESP32 datasheet, and there have 16 channels can use 8 in High – ...Read more

Hi!

I’m applying the LED Control (LEDC) PWM to control the servo motor, it worked well.
And now I need to control further than 8, I’ve checked the ESP32 datasheet, and there have 16 channels can use 8 in High – speed mode, and 8 in Low – speed mode.
But the ledc library does not support low- speed mode right now, is there any way to use led pwn in low- speed mode?
Like, write the register directly?

thanks!

Read less
datasheetespesp32espressifledledcuart
  1. Alex thomas
    Added an answer on November 11, 2022 at 12:21 pm

    Not sure if the driver does not support all 16 channels. they may just not be supporting the low- speed option of the low- speed channels. But anyway, if you want to poke at the registers yourself, the LED PWM controller is documented in the TRM. Do not forget to actually turn the peripheral on, andRead more

    Not sure if the driver does not support all 16 channels. they may just not be supporting the low- speed option of the low- speed channels. But anyway, if you want to poke at the registers yourself, the LED PWM controller is documented in the TRM. Do not forget to actually turn the peripheral on, and you should get it going enough quickly.

     

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
dev krishnan
  • 0
dev krishnan
Asked: September 2, 2022In: LEDs & Optoelectronics

How STLD40D Driver Work?

  • 0

Hi everyone I’m going to use STLD40D Driver IC for my TFT LCD. For driving LCD backlight, I’v chosen this Driver from ST. But I can’t figure out the function theory of this driver. could you please explain for me the STLD40D ...Read more

Hi everyone

I’m going to use STLD40D Driver IC for my TFT LCD. For driving LCD backlight, I’v chosen this Driver from ST. But I can’t figure out the function theory of this driver.

could you please explain for me the STLD40D function theory and how to use that?

thank you in advance.

Read less
driverICledstld40d
  1. vikas Nagpal
    Added an answer on September 9, 2022 at 10:09 am

    Well, the STLD40D is a boost converter. The function is also described in the data sheet, section5.1. It must be taken into account that the converter not only has a min off time, but also a maximum on time. The switch- on moment is particularly interesting firstly there's no FB signal, so the powerRead more

    Well, the STLD40D is a boost converter. The function is also described in the data sheet, section5.1.

    It must be taken into account that the converter not only has a min off time, but also a maximum on time.
    The switch- on moment is particularly interesting firstly there’s no FB signal, so the power stage is switched on( SW to GND), which charges the boost inductor. As there isn’t yet enough affair voltage to drive a current through the LEDs, pin FB remains zero. still, the maximum on time now kicks in and switches the power stage off again, whereby the energy stored in the boost inductor is delivered to the LEDs at a high voltage and results in a corresponding current and a signal to FB. From now on, FB can regulate normally.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
Alex thomas
  • 0
Alex thomas
Asked: August 26, 2022In: LEDs & Optoelectronics

How Can I Run & Check 36 RGB LED?

  • 0

I’ve a design. I’ve 13 switch and these switches control to leds. For example when i click first button, first led will be on( likewise when i click again, it’ll be out). So microcontroller want to knows everything about it. ...Read more

I’ve a design. I’ve 13 switch and these switches control to leds. For example when i click first button, first led will be on( likewise when i click again, it’ll be out). So microcontroller want to knows everything about it. But how can i control these leds? Because i want 36 * 3 io pins( RGB). Similarly after i want to control lightness of all leds with dimmer.

Do you have any IC hints for leds control & leds pwm controller?

Read less
dimmerICledlighting and ledoptoelectronicsrgbstm32 mcusstm32f7switch
  1. vikas Nagpal
    Added an answer on August 30, 2022 at 9:56 am

    There are numerous LED drivers also from STMicroelectronics, e.g. LED1202 LED1642GW etc ( see LED Array Drivers STMicroelectronics) Of course, the correct type depends on several factors, e.g. how you want to control the LEDs( I2C, SPI, etc). With RGB LEDs you'll clearly only switch one LED per chanRead more

    There are numerous LED drivers also from STMicroelectronics, e.g.

    LED1202
    LED1642GW
    etc ( see LED Array Drivers STMicroelectronics)

    Of course, the correct type depends on several factors, e.g. how you want to control the LEDs( I2C, SPI, etc). With RGB LEDs you’ll clearly only switch one LED per channel, so you should be suitable to get by with one LED driver for 5V.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
vsharma
  • 0
vsharma
Asked: July 25, 2022In: Power Management

ISL94202-/SD line, is it useful when no MCU present?

  • 0

I have a 8S4P LiFePO4 pack being controlled by the ISL94202 but our BMS board doesn’t use a MCU so it’s dependent on the 94202 chip.  Currently we have a LED controlled by the /SD line.  If there’s an error ...Read more

I have a 8S4P LiFePO4 pack being controlled by the ISL94202 but our BMS board doesn’t use a MCU so it’s dependent on the 94202 chip.  Currently we have a LED controlled by the /SD line.  If there’s an error the LED lights and let’s the end user know something is wrong.

The issue is why does the /SD line go active when the unit goes into SLEEP mode?  We need the chip go go into a low current state to keep the battery from going low when the unit isn’t being used.  But since the /SD line is active during SLEEP mode we can’t use that to control the error LED.

Is there any way to be able to indicate to the end user that an error has occurred but not during SLEEP mode?

Read less
bms boardisl94202ledmcuSLEEP mode
  1. pallavi sharma
    Added an answer on July 29, 2022 at 4:36 pm

    The purpose of the SD pin is to provide an alert to the user that the power FETs have been turned off by the device. The PSD pin can be linked to fatal faults such as OVLO, UVLO and DVCF and be used to drive an external circuit that alerts the user to these faults, and/or blows a fuse.  If either piRead more

    The purpose of the SD pin is to provide an alert to the user that the power FETs have been turned off by the device.

    The PSD pin can be linked to fatal faults such as OVLO, UVLO and DVCF and be used to drive an external circuit that alerts the user to these faults, and/or blows a fuse. 

    If either pin is used to drive an external circuit care must be taken to prevent complete discharge of the cells.

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 1 Answer
Answer
Jagmohan rawat
  • 0
Jagmohan rawat
Asked: May 27, 2022In: Power Management

LED flood light

  • 0

We are making 10 watt flood light with sic IC  and we are facing issue with 4kv and 440volt because if we use mov 561 then surge pass 4kv and high voltage pass only 400volt and if we use mov ...Read more

We are making 10 watt flood light with sic IC  and we are facing issue with 4kv and 440volt because if we use mov 561 then surge pass 4kv and high voltage pass only 400volt and if we use mov 621 then surge fail at 3.5kv and high voltage pass 440volt , please suggest the mov which one can use those we can achieve 4kv and 440volt pass both parameter .

Read less
Flood lighthigh voltageledsurge passvoltage
  1. Sandeep kumar
    Added an answer on August 3, 2022 at 1:52 pm

    Hi ,   There is only issue with MOV tolerance if you use less tolerance mov or High Surge MOV your issue will be solve Thanks sandeep

    Hi ,

     

    There is only issue with MOV tolerance if you use less tolerance mov or High Surge MOV your issue will be solve

    Thanks

    sandeep

    See less
    • 0
    • Share
      Share
      • Share on Facebook
      • Share on Twitter
      • Share on LinkedIn
      • Share on WhatsApp
  • 2 Answers
Answer
AJAY CHATURVEDI
  • 0
AJAY CHATURVEDI
Asked: May 17, 2022In: LEDs & Optoelectronics

PF and PFC

  • 0

What are PF and PFC and why are they important?

What are PF and PFC and why are they important?

Read less
ledPFPFC
  • 0 Answers
Answer
1 2

Sidebar

Ask A Question

Stats

  • Questions 394
  • Answers 381
  • Comments 0
  • Best Answers 9
  • Popular
  • Answers
  • Manoj

    Configuration using .dp vision in Infineon XDPL series IC .

    • 5 Answers
  • Linto

    Renesas RL78/G14 ADC interface code

    • 4 Answers
  • ashishgawade
    ashishgawade added an answer Hello, The USB-serial-JTAG port can usually reset/put the chip into… March 30, 2023 at 11:00 am
  • ashishgawade
    ashishgawade added an answer Hi Nidhi, Thanks for reaching out to Volt.Tech Engineering Community.… March 28, 2023 at 10:13 am
  • ashishgawade
    ashishgawade added an answer Hello@vikas, It's always recommended to use a bleeder of 100 ohms. Vout of the part has an offset… March 24, 2023 at 9:55 am
  • vikas Nagpal
    vikas Nagpal added an answer Hello, The SMPS reduces the power loss when VDD is… March 22, 2023 at 10:30 am
  • nidhi singh
    nidhi singh added an answer Hello Ashish, No, sorry, that kind of setup is physically… March 20, 2023 at 10:45 am

Users

test9420030

test9420030

  • 0 Questions
  • 0 Answers
test30329068

test30329068

  • 0 Questions
  • 0 Answers
test38329563

test38329563

  • 0 Questions
  • 0 Answers

Explore

  • Tags
  • Category
    • Amplifiers
    • Passives & Protection
    • Clocks & Timing
    • Diodes & Rectifiers
    • FPGAs & PLDs
    • Interface ICs & Transceivers
    • LEDs & Optoelectronics
    • Memories
    • MEMS & Sensors
    • Microcontroller
    • Power Management
    • RF & Microwave
    • Security & Smart Card
    • Motor Drivers
    • Wireless Connectivity
  • Groups
  • Add group
  • Badges
  • Help

Footer

volt.tech

Volt.Tech

Find your spark

About Us

  • About Us
  • Contact Us
  • Groups

Legal Stuff

  • Privacy Policy
  • Faqs

Follow

© 2022 volt.tech. All Rights Reserved
With Love by volt.tech.