I'm working on a A47 headphone amp and I'm putting in a diode based Battery / wall power switch like the "clever method" here:
http://tangentsoft.net/audio/cmoy-tutorial/tweaks.html#dcjack
This will work as long as one voltage is at least one voltage drop higher than the other, right? That is, it doesn't matter if the battery is higher voltage or the wall DC, as long as there is a difference.
It makes sense in my head but I just want to make sure I'm not overlooking anything since I'm new to these types of electronics. I want to run two 9v batteries in series ( ~18v) with a 15.3v wall wart I stole off a broken printer.
Thanks!
http://tangentsoft.net/audio/cmoy-tutorial/tweaks.html#dcjack
This will work as long as one voltage is at least one voltage drop higher than the other, right? That is, it doesn't matter if the battery is higher voltage or the wall DC, as long as there is a difference.
It makes sense in my head but I just want to make sure I'm not overlooking anything since I'm new to these types of electronics. I want to run two 9v batteries in series ( ~18v) with a 15.3v wall wart I stole off a broken printer.
Thanks!