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Old 03-28-2017 - The odd voltage about LM2596 - Power Distribution Systems - Voltage Talk forum
ling1995 ling1995 is offline
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Question The odd voltage about LM2596

Hello~all
I’m a student majoring in electronics while my professional knowledge is limited.I need some help !
Recently,I give electricity to GSM module passing LM2596-ADJ (this one). The normal outputted voltage is 4.2v. However,When it receives messages or calls,the peak voltage will up to 4.6v suddently. Then the module will close off normal.:wallbash:
As far as I am concerned, it is common that the power voltage will be putted down if the current of GSM is big. Why this rise here ?Could anybody here tell me?
Thanks a lot.
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