Fix noise issue from step down converter
Budget: €30 – €250 EUR
Into a project I am working is used 12V SMPS to power an audio amplifier. We have no “noise” on that stage.
Then I use a step down converter to convert the 12V to 5V and power a mic preamplifier (Respeaker – usb Mic array) and a development board. There is a lot of background noise. If I power the preamp directly from a cheap 5v power supply the noise disappears. The problem is that I only have one power source, the 12v, so I need a solution.
Thank you
Then I use a step down converter to convert the 12V to 5V and power a mic preamplifier (Respeaker – usb Mic array) and a development board. There is a lot of background noise. If I power the preamp directly from a cheap 5v power supply the noise disappears. The problem is that I only have one power source, the 12v, so I need a solution.
Thank you