This analog stuff is a gift that keeps on giving. Now I have a new issue.
My amplified signal rides on a crispy 50hz signal
![](http://xtech.bg/wp-content/uploads/2024/07/DS1Z_QuickPrint1-1.png)
![](http://xtech.bg/wp-content/uploads/2024/07/DS1Z_QuickPrint3.png)
From what I read this could be remedied with Notch Filter. To implement this filter I need split power supply.
Are there any options to do this with solution with single power supply?
p.s. I am not complaing this is actually fascinating!