barefoot
barefootsound.com
Is it ok to float the common pin negative relative to the shield in a phantom power scheme?
I want to build a portable battery powered mic preamp. I have 4 very powerful compact rechargeable 12V batteries. The simplified circuit layout is shown here:
The amplifier will run from +/- 24V supplies. Then, instead of having to add 2 more 12V batteries to reach 48V for the phantom power, I'd like to just pull pins 2 and 3 up to +24V and pull pin 1 down to -24V.
Will this work, or could floating the common harm the mic?
Thanks!
barefoot
http://barefootsound.com
I want to build a portable battery powered mic preamp. I have 4 very powerful compact rechargeable 12V batteries. The simplified circuit layout is shown here:
The amplifier will run from +/- 24V supplies. Then, instead of having to add 2 more 12V batteries to reach 48V for the phantom power, I'd like to just pull pins 2 and 3 up to +24V and pull pin 1 down to -24V.
Will this work, or could floating the common harm the mic?
Thanks!
barefoot
http://barefootsound.com