Phantom power circuit

摘要

A phantom power circuit has a detection circuit and a limiting circuit, the detection circuit detecting a pulse current generated in association with connection or disconnection of a condenser microphone, the limiting circuit limiting the output of the condenser microphone. The detection circuit detects a pulse current generated between input terminals of the condenser microphone. The limiting circuit reduces the output from the condenser microphone when the detection circuit detects the pulse current.

主权项

1. A phantom power circuit supplying a power to a condenser microphone through terminals of the phantom power circuit, the phantom power circuit comprising:
a detection circuit that detects a pulse current generated upon connections or disconnections of terminals of the condenser microphone being not made simultaneously to or from respective terminals of the phantom power circuit; and a limiting circuit that reduces an output of the terminals of the condenser microphone, wherein the pulse current being generated between the terminals of the phantom power circuit, and the limiting circuit reduces the output from the terminals of the condenser microphone when the detection circuit detects the pulse current.