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G8MNY > TECH 13.12.05 19:37l 23 Lines 946 Bytes #999 (0) @ WW
BID : 8352_GB7CIP
Read: DL1LCA GUEST OE7FMI
Subj: Re: Microwave Xfmr Welds
Path: DB0FHN<DB0MRW<OK0PPL<DB0RES<DK0WUE<7M3TJZ<SP7MGD<ON0BEL<GB7CIP
Sent: 051213/1204Z @:GB7CIP.#32.GBR.EU #:8352 [Caterham] $:8352_GB7CIP
From: G8MNY@GB7CIP.#32.GBR.EU
To : TECH@WW
Here is my explanation why you can get away with welds on laminated
transformer/motor cores.
Solid iron Laminated Welded Laminated Iron Dust
__
/|\ ³ ³ | ººº ÒÒÒ °°°
| ³ ³ | ººº ººº °°°
| ³__³ \|/ ººº ººº °°°
<--
High circulating Little eddy Still little Very little
eddy currents current in eddy currents eddy currents
flow around sides each sheet as as only welded as only tiny
of large cross little area & on one side. area per
section. Insulated (oxide) particle.
Surface to next
Laminate.
73 de John G8MNY on 2005-DEC-13 @ 12:03 local time, Old XT Still OK!
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