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Electronics => Projects, Designs, and Technical Stuff => Topic started by: mehdifat on November 23, 2024, 06:18:46 pm

Title: What is the maximum safe ripple and noise output of usb power supply for phones?
Post by: mehdifat on November 23, 2024, 06:18:46 pm

hello.
can you kindly tell me  What is the maximum safe ripple and noise output of usb power supplies that are used to charge smartphones before possible damage to the battery or electronic components ?
i searched a lot on the web but couldn't get an even general answer.
different recommended methods of ripple measurement like adding caps at the PSU output or not, made me even more confused.

Title: Re: What is the maximum safe ripple and noise output of usb power supply for phones?
Post by: mehdifat on November 25, 2024, 07:50:04 pm

No one can help?

Title: Re: What is the maximum safe ripple and noise output of usb power supply for phones?
Post by: tunk on November 25, 2024, 08:06:15 pm

There's tests of quite a few USB chargers here:
https://lygte-info.dk/info/indexUSB%20UK.html
IIRC the better ones are less than 100mVpp.