[ARC5] Adventures in Battery Ops - filters.

[Scott Robinson]

BE glad your neighbors don't have 'touch lamps' or you'd be buried in noise.

/scott

On 4/10/15 3:46 PM, Bill Cromwell wrote:
> Hi Wayne,
>
> Radiated rf interference won't be reduced by using batteries to power
> your radios. Only interference that is conducted via the power lines.
> There are two shops  withing a quarter mile of me that have arc welding
> equipment. I can hear them when they are welding. I have been surprised
> about the low level of noise. Neighbors 'appliances' seem to be the
> worst of it.
>
> 73,
>
> Bill  KU8H
>
>
> On 04/10/2015 05:49 PM, Robert Eleazer wrote:
>> Several years ago (like 16 or 17, I think) I installed some Halogen
>> lights in the Kitchen/Den area.  I later found out that whenever they
>> were turned on they wiped out everything between the AM broadcast band
>> and 6 meters.  I assumed that it was due to some kind of a poor
>> connection, although I could see nothing wrong.
>>
>> The lights quit working a few weeks back.  Instead of 12V it was down
>> to 7V under load,.  That is when I discovered that the power supply
>> was not a simple transformer as I had assumed but must be a switcher.
>> It's not very big but is rated at 60VA.  I figured I would just use a
>> transformer to replace it but found that all I had in stock were
>> either physically too large or electronically too small. I ordered a
>> 60VA one for $3.36 from ebay and I guess next I'll put it in.  But I
>> realize now that the extended output power lines going to the lights
>> from the original one were no doubt acting as antennas to broadcast
>> the noise it was generating.  So the noise does not have to be coming
>> from the power lines.  Don't know what the new power supply will do
>> but I'll be finding out.
>>
>> Maybe I should switch to new LED lights.
>>
>> Wayne
>> ______________________________________________________________
>>
>
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