barbara lund on tue 11 mar 97
I have just joined the clayart group so I'll throw in my 2cents of chatter.
My electric wheel doesn't interfere with the radio but my L&L kiln effects 1
radio station (FM) everywhere on my 1/4 acre plot , including the car radio
and shows up if anyone is making a tape recording in the same building.
This is model 2927. My J236 model doesn"t interfere at all. My electrician
just shrugs. This same kiln clicks and bangs every time the circuits go on
and off- has right from the very beginning- and the J236 just purrs. C'est
la vie.
Gavin Stairs on wed 12 mar 97
At 06:56 AM 11/03/97 EST, you wrote:
>----------------------------Original message----------------------------
>I have just joined the clayart group so I'll throw in my 2cents of chatter.
>My electric wheel doesn't interfere with the radio but my L&L kiln effects 1
>radio station (FM) everywhere on my 1/4 acre plot , including the car radio
>and shows up if anyone is making a tape recording in the same building.
>This is model 2927. My J236 model doesn"t interfere at all. My electrician
>just shrugs. This same kiln clicks and bangs every time the circuits go on
>and off- has right from the very beginning- and the J236 just purrs. C'est
>la vie.
Switching transients. If a mechanical switch arcs, it will transmit all
kinds of static. If an electronic switch (solid state relay) switches any
old time, it will also transmit static. The most neighborly switch is
called a zero-crossing switch, because it waits until the current has
stopped flowing in the line preparatory to changing direction before
interrupting. No arc, no step, no static. This is possible because line
power is alternating current. That is, it doesn't go one way all the time,
but back and forth. Hence it must stop and start, hence the zero-crossing
switch.
See also Bill Aycock's comments on the wheel problem. I don't know if the
clip on hash filter will work on the kiln. This is a big, bad transient
with lots of current in it. A bit like closing the barn door after the
horse is gone.
Gavin
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