Want to find active noise cancelling circuits using dummy coil.

[Alan0354]

So far the two I know of is one in Fender Elite Strat and the Silent circuit in Ernie Ball guitars. Both use active electronics to isolate the dummy coil. Are there any other design around other than these two? If so, anyone have link to those?

Thanks

Alan

[jrfrond]

It's not much more than a balanced mic pre design. Here's a schematic link to one: Low Noise Balanced Microphone Preamp

The SC pickup feeds one input (+), the dummy coil the other (-).