Even if the bias does not saturate the coil and cause distortion, it
*will* reduce the output (sensitivity). A dynamic mic typically has
a very low (< 5 mV) output level any reduction in output level is to be
avoided.
73,
... Joe, W4TV
On 11/5/2015 1:11 AM, Jim Brown wrote:
On
On Wed,11/4/2015 5:43 AM, Charlie T, K3ICH wrote:
If you ever wondered why a bias voltage can cause
distortion in a dynamic microphone element, just
consider what happens when you connect a DC source
to a speaker. The voice coil move in one
direction depending on the polarity. Now think of
a
On Wed,11/4/2015 6:39 PM, Bob McGraw - K4TAX wrote:
Yes, with any dynamic mike being used, set the bias to the off position
Don Wilhelm says that some dynamic mics sold to hams DO get distorted
with bias applied. Whether it's a poor mic or a saturated transformer,
it's clearly better to turn
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
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
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