Re: U1 fried

Jerry Gaffke

Re-read this post:

Adding a series 8 ohm 1/2 watt resistor between the uBitx board and your phone jack should 
safely prevent any damage, though it will reduce the maximum available audio.

Could be that 4 ohms is sufficient.

On Wed, Feb 28, 2018 at 10:49 am, Walter wrote:
So what is the universal fix?  if a mono jack is plugged into a stereo jack on another electronic device it does not destroy the audio output of those devices.

How do they prevent damage on many other devices with stereo jacks?

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