12 volt battery as power source

I'm actually trying to design power supplies that use several battery sources(car batteries) to provide a sufficient collector(or plate) DC voltages to preamps with recharge trigger that will turn on the charge voltage whenever the work voltage drop bellow tolerance.

Designing such PS for large poweramps may be very and very challenging especially if you want to keep an internal PS resistance bellow 8Ohms or number of such batteries should be enormous along with giant size electrolytics.

I use 12vdc batteries for most of my system, and it works very well indeed, as long as the gear is designed to work that way.

You can use a power inverter to power your AC devices from a battery, but you have to get the right kind of inverter that doesn't make noise on the line. Studer Innotek "pure sine wave" inverters will work great with no noise, and I know this because I use one to power my preamp.

As with anything else, you have to know what you are doing,if you are going to make something like this work right.

thanks for the replies