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The difference between LM331 and KA331?

R

ROSELJR

Banned
Help: The difference between LM331 and KA331, mainly for debugging

I am a junior scholar, and made a digital thermometer according to the picture. The V/F circuit inside is LM331

Since LM331 was not found, KA331 was used instead,

It looks exactly the same from the PDF data, but it can’t be debugged.

There is no problem with op amp and gate control. I want to know how much difference is there between these two ICs in performance?

Thanks in advance.
 
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