curious_mind
Full Member level 4
I have a tdk lamda power supply CUT35-522, which is 230V input, 5V,+/-12V output. I am using +12V output to power my arduino board with LCD. It works fine.
The power supply claimed immunity to surge and EFT. To my surprise, when the supply was subjected to 2kV surge, residual voltage of +/-25V appeared at +12V output. This lead to resetting of arduino board and garbage characters displayed in LCD. I am looking for a solution to reduce this surplus voltage and prevent garbage characters in LCD. Kindly suggest.
The power supply claimed immunity to surge and EFT. To my surprise, when the supply was subjected to 2kV surge, residual voltage of +/-25V appeared at +12V output. This lead to resetting of arduino board and garbage characters displayed in LCD. I am looking for a solution to reduce this surplus voltage and prevent garbage characters in LCD. Kindly suggest.