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Old June 8th 07, 01:40 AM posted to alt.binaries.pictures.radio
Ken Ken is offline
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First recorded activity by RadioBanter: Sep 2006
Posts: 68
Default Stewart-Warner reactance dimmer

Uncle Peter wrote:
"Ken" wrote in message
...
Randy or Sherry Guttery wrote:
Dave Burson wrote:
best regards...

So with high B+ current, the xfmr is saturated, less bucking, lamp is
bright? That means the bulb dims when on station? Ken


Core saturates, and windings lose their inductance, basically becoming
purely resistive (only the wire winding DC resistance with no reactance),
the light would be brighter.

Pee


But the core saturates on high current, that's off station. So the light
is bright off station and dim on. It would make sense to have the lamp
brighten on station, but I have seen other schemes work like this. Ken