In Reply to: RE: through bolts posted by unclestu on April 30, 2012 at 12:21:52:
Mounting bolts can form a shorted turn that intercepts part of the magnetic flux, wasting power as heat in a power transformer, reducing inductance (and low-end response) in an output transformer. The major loop is chassis to bolt to top end bell to bolt to chassis. If bolts are insulated at one end, it breaks this loop. Smaller loops can be created if bolt threads contact laminations, so sleeve them too. Brass bolts or steel will have the same problem - brass would be worse as it's more conductive.
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Follow Ups
- RE: through bolts - Tom Bavis 06:03:15 05/01/12 (2)
- RE: through bolts - Swanson 09:51:43 05/01/12 (1)
- RE: through bolts - berndt 10:52:22 05/01/12 (0)