[Elecraft] Bias and Dynamic Mics

[Jim Brown]

On Wed,11/4/2015 6:39 PM, Bob McGraw - K4TAX wrote:
> While I agree with Jim, K9YC on this.  Some dynamic mikes I've 
> encountered do use a transformer to get the voltage level from the 
> very low impedance Z element to a respectable output value. Running a 
> bit of DC through the transformer on the secondary side could tend to 
> cause some DC saturation. 

Exactly right, Bob. And Don Wilhelm reminded me that some mics used with 
a K2 didn't like bias. That can, of course, depend strongly on the value 
of the bias source resistance.

73, Jim K9YC