guitarmike2107
Member
- Joined
- Apr 17, 2021
- Messages
- 16
Short Question: What are the design/build tips for reducing stray magnetic flux from a power transformer other than fitting a flux band and running the core at a lower B
Long Version: I have two Tweed Deluxe power transformers (guitar amp), same lamination size and core size, one with M400 core running at 10000 gauss and one with M6 core running at 14000 gauss ( thicker wire and less turns for running 6L6's)
The induced hum in the output transformer is higher with the M6 core and is almost non existent with the M400 core. The tweed deluxe OT is mounted close to power transformer, It could be moved but don't really want to do that every time.
So I was wondering if I have missed something when winding the power transformers that could be increasing the stray magnetic field?
Also does anyone know of a good place to buy copper strip for flux bands, I can find copper tape easily but getting strip is more difficult.
Thanks
Long Version: I have two Tweed Deluxe power transformers (guitar amp), same lamination size and core size, one with M400 core running at 10000 gauss and one with M6 core running at 14000 gauss ( thicker wire and less turns for running 6L6's)
The induced hum in the output transformer is higher with the M6 core and is almost non existent with the M400 core. The tweed deluxe OT is mounted close to power transformer, It could be moved but don't really want to do that every time.
So I was wondering if I have missed something when winding the power transformers that could be increasing the stray magnetic field?
Also does anyone know of a good place to buy copper strip for flux bands, I can find copper tape easily but getting strip is more difficult.
Thanks