AnswerBun.com

UVC Lamp causes Atmega 328P to malfunction

I have got an Atmega328p which connected to a TFT LCD 1.3 inch using SPI. The Atmega 328P is powered through a 5V adaptor. The problem is most of the time when I switched on the UVC Lamp the LCD will stop working and sometimes the Atmega328p also stops working. Even when I connect the UVC lamp directly to the power line, and did not connect it at all to the Atmega328p it still causes malfunction. I have tried adding 680uF capacitor to Atmega 5V and GND but it seems to not solve the problem either. Does anyone know why this happens? And what steps should I take to solve this?

Here is my Schematics:

enter image description here

I connect the UVC lamp separately and directly to the power lines.

This is the UVC Lamp that I use, I can’t seem to find any datasheet for this:

enter image description here

Yamano UVC Lamp Germicidal

Electrical Engineering Asked by shafiyyah on December 29, 2020

1 Answers

One Answer

While lots of folks are hypothesizing EMI, I would personally suspect that it is the photon flux from the lamp. A UV germicidal lamp has pretty energetic photons with a pretty solid photon flux. If you have some chip that isn't sufficiently opaque to the frequency of light emitted, you can get some weird effects.

For example: Xenon flash bulbs could reboot a Raspberry Pi 2 because they would generate carriers in the silicon and flood out the transistors in a power regulator chip.

https://www.alphr.com/raspberry-pi-2/1000375/why-a-camera-flash-will-reboot-your-raspberry-pi-2/

That lamp looks like an actual commercial product for aquariums, so I'm making a big assumption that it had to pass radiated emissions testing somewhere other than China. Thus, I'm kind of skeptical that it is radiating enough to set off an EMI-caused reboot.

Good luck.

Correct answer by Andrew Lentvorski on December 29, 2020

Add your own answers!

Related Questions

Current Sense circuit with digitally programmable gain

1  Asked on December 22, 2021 by amacdonald

 

Negative current sense limit

1  Asked on December 22, 2021 by learn-design

   

Adding 2 cooling fans to an amplifier circuit board

1  Asked on December 21, 2021 by errol

   

Series RLC circuits

2  Asked on December 21, 2021 by abhilash-kurmi

       

Nature of conventional current flow in a p-n junction

2  Asked on December 21, 2021 by elile

 

Voltage divider homework

1  Asked on December 19, 2021 by prince-vegas

   

Long tailed pair

1  Asked on December 19, 2021

   

Transformer Going Up In Voltage Over Time

1  Asked on December 19, 2021 by dicer

   

Ask a Question

Get help from others!

© 2022 AnswerBun.com. All rights reserved.