James Perrett wrote:CS70 wrote:Crossposted with Sam.
One more thing that may help: it’s called “phantom power” but it’s not “power” in the technical sense
Erm - phantom power IS power but just not very much as the current is limited to 14mA (7mA in each leg). The maximum power that could be delivered to a mic would be just under 170mW although most condenser mics should require less.
I was wondering whether you might be confusing this with the polarising voltage needed by standard condenser capsules? This requires virtually no current but it also requires the use of a preamp with a very high input impedance placed close to the microphone capsule. This preamp will require a certain amount of current (and therefore power).
Er, no? In technical terms power is the rate of energy itransfer per unit of time. It’s measured in watts, which is joules per second. Phantom “power” indicates the presence of a voltage differential - which is measured in volts. You can get power out if it, but it’s no power by itself.
The distinction is not particularly interesting for a mic user, which is why the loose usage is fine (and my comment). The OP seems to favor rather precise definition and that’s what physics is there for..