sr1200
Well-known member
Just want to see if I can get something clarified, since I'm not 100% sure I understand this. Here's how I understand it:
If we run DC through a transformer that has an end tied to ground we get current flowing through one side of the transformer. This is a magnetization current and results in the core heating and over time MAY cause issues. With phantom power, since we are applying (hopefully) an equal 48v DC to both legs of the winding, there is no current flowing through the coil, therefore no magnetization current and no heating. This is assuming everything is working properly and we dont have a bad cable with a pin connected to ground etc.
Please correct what is wrong with this statement if it is wrong. I'm trying to research some things regarding phantom power applied to certain dynamic mics, including ribbon mics, and haven't been able to find a straight forward answer as to what is happening at the transformer in the real world.
If we run DC through a transformer that has an end tied to ground we get current flowing through one side of the transformer. This is a magnetization current and results in the core heating and over time MAY cause issues. With phantom power, since we are applying (hopefully) an equal 48v DC to both legs of the winding, there is no current flowing through the coil, therefore no magnetization current and no heating. This is assuming everything is working properly and we dont have a bad cable with a pin connected to ground etc.
Please correct what is wrong with this statement if it is wrong. I'm trying to research some things regarding phantom power applied to certain dynamic mics, including ribbon mics, and haven't been able to find a straight forward answer as to what is happening at the transformer in the real world.