[[email protected]]

On Tuesday, March 6, 2018 at 12:29:49 PM UTC-5, wrote:
On Saturday, March 3, 2018 at 8:07:07 PM UTC-5, mcp6453 wrote:
On 3/1/2018 7:45 PM, Scott Dorsey wrote:
zobel network

I'd never heard of a zobel network before, but, of course, I've seen
them many times. After doing a lot of reading after seeing this post,
the best solution seems to be a high-quality transformer, such as a
Jensen, UTC, or Lundahl.

This particular application is an AM radio processor. The output
transformer ringing is rumored to cause a 2% loss in modulation.
Theoretically that's possible, but I wonder how real it is. Transmitters
are such dirty devices.

In that application you are never allowed to go over 100% negative modulation because it causes splatter.

Spurious emissions?

Jack

You set up the modulation processing limiter so you can't go over 100%, but if you have a transformers or any device that is not exactly flat over the frequency range in the audio path AFTER the limiter, you would need to set the limiter so those frequencies that were peaked were held at 100% and then the rest of the range would be under 100%.


When you need an exactly flat response like this application, the best transformer is no transformer.

m