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Lawnboy wrote: ...powered by the mains through a resistor or triac dimmer,
Harry Dalek wrote:Saturable reactor. I don't know why its not used much these days..
Steve Anderson wrote:Harry Dalek wrote:Saturable reactor. I don't know why its not used much these days..
It is still used in radar for generating short pulse widths into a transformer to power the Magnetron. A pulse voltage is applied to a transformer that also has a saturable inductor in parallel with the primary, At first all is well, the tranny does its job and powers the magnetron with a few kW, after a while (depending on the range required) the parallel inductor saturates and shuts off the current to the transformer. It is a bit of a 'black art' though.
Even in marine applications you want a resolution of 5m or less, that's a very short time when you're trying to berth a huge container ship or cruise liner. Speed of light comes into serious play here.... 3.33ns/m. when you're trying to land an aircraft in fog, 10m of altitude = 66.6 ns there and back...Not a big deal today, but can you imagine what it was like in the 50s in London with all the pollution of surrounding housing burning coal? Here I'm talking about ground proximity warnings...
Steve A.
Harry Dalek wrote:Saturable reactor (magnetic Amplifier) does the trick ,i don't know why its not used much these days ,you can control HV safely and very simple .
Lawnboy wrote:Harry Dalek wrote:Saturable reactor (magnetic Amplifier) does the trick ,i don't know why its not used much these days ,you can control HV safely and very simple .
I'd never heard of something like that before. Very interesting video clip, Harry.
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