Unlike phantom power, bias does not require a balanced circuit. Bias supplies power to a Junction Field Effect Transistor (JFET) connected to the output of an electret condenser mic element. The JFET acts as an impedance converter that is a necessity in any microphone design that uses a condenser element.
Iodine atoms have 53 electrons and the shell structure is 2.8.18.18.7. The ground state electron configuration of ground state gaseous neutral iodine is [Kr].4d10.5s2.5p5 and the term symbol is 2P3/2.
You may remember from Chemistry class, Iodine is a chemical element of the periodic table with the symbol I and atomic number 53. But Besides knowing the physical properties of iodine, you may not be aware of exactly what iodine is and the immense history behind the use of this vital element.