/diy/ - Do It Yourself

>>1196026
>can actually run that in a series?
You can. The two outputs are fully isolated and you can connect them in series to get ± the input voltage (output is _not_ regulated). The upper limit of 13.2V is a bit tight (car battery can go up to 14V) but you can reduce the input voltage with a series diode or two. The data sheet of the D121212S-2W (www.mornsun-power.com/uploads/pdf/D_S-2W.pdf) mentions output ripple (70 kHz noise) and a minimum load requirement, both of which will not be critical. What may prevent the converter from starting up at all is the maximum capacitive load of only 1µF (the amp circuit has about 100µF). There are ways to make it work though: apart from the input diode, use 100nF at the outputs followed by a 7809 for the positive side and a 7909 for the negative voltage to get ±9V just like from the two batteries.