DC2838A worked well then does not work.

Sasagaki

on Mar 17, 2025

Category: Hardware

Product Number: DC2838A

Hi all,

I've just got DC2838A and it worked well with a 12V input voltage supplied by a power supply unit and a 248V output voltage measured by a multimeter.

As I needed 90V output, I replaced R5 (6.49K) with a 18K chip resistor and confirmed the 90.2V output as I expected.

Next day, I measured it again and realized that the output voltage11.3V was measured with the same voltage supply and multimeter.

I've checked conductions around the R5 but no issue was found. Does anyone know similar issue like this?

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