I am putting a 9v powered circuit into an electric guitar. It will be powered by a 9v power supply through a cable, and also have a backup 9v battery on board the guitar. I am wondering if I could run the power supply and battery simultaneously in parallel, to accomplish 3 main goals:
Although the power supply has filters, it needs to be as ripple-free as absolutely possible, as any ripple will be audible as noise. will the battery help to smooth the power supply's delivery? This is the main goal.
I am hoping the power supply will keep the battery charged, will this be the case?
I want to simplify switching and avoid having to manually switch power supplies.
Edit: essentially, I am trying to replicate a car charging system, where the alternator and battery run in parallel - the alternator float charges the battery, while the battery smooths any voltage spikes from the alternator, and if you disconnect the alternator the battery will keep the system running.