[ARC5] externally generated noise from switching controllers.

[Brian Clarke]

Hello Leslie,

What dynamic dimming range do you get with these LEDs?

73 de Brian, VK2GCE.

----- Original Message ----- 
From: "Leslie Smith" <vk2bcu at operamail.com>
To: "Discussion of AN/ARC-5 military radio equipment." 
<arc5 at mailman.qth.net>
Sent: Wednesday, June 09, 2010 7:51 AM
Subject: Re: [ARC5] externally generated noise from switching controllers.


> Hello Michael,
> The company I work for, Poolstore International, makes and sells 
> waterproof (submersible) pool lighting.  The poolstore lights consist of a 
> series parallel circuit of (about 48 or 51 LEDs).  Three LEDs are 
> connected in series with a limiting resistor.  Power comes from a 12V 
> transformer, feeding a bridge rectifier.
>
> Very expensive, but very quiet.
>
> Les
>
>
>> ----- Original Message -----
>> From: "Michael Bittner" <mmab at cox.net>
>> To: "Discussion of AN/ARC-5 military radio equipment." 
>> <arc5 at mailman.qth.net>, "Bob Macklin" <macklinbob at msn.com>
>> Subject: Re: [ARC5] externally generated noise from switching 
>> controllers.
>> Date: Tue, 8 Jun 2010 14:45:23 -0700
>>
>>
>> Supposedly there are light dimmers available that do not generate RFI.
>> Anyone know who makes these and where they can be bought?  If I can 
>> obtain
>> some, I will give them to my neighbors.  Mike, W6MAB
>>
>>
>> ----- Original Message -----
>> From: "Leslie Smith" <vk2bcu at operamail.com>
>> To: "Bob Macklin" <macklinbob at msn.com>; "Discussion of AN/ARC-5 military
>> radio equipment." <arc5 at mailman.qth.net>
>> Sent: Tuesday, June 08, 2010 1:38 PM
>> Subject: [ARC5] externally generated noise from switching controllers.
>>
>>
>> > Hello group,
>> > I subscribe to a newsletter from NXP semiconductors.
>> > The newsletter describes or advertises new products - devices,
>> > chips, application notes.
>> >
>> >
>> > Here is the latest:
>> > SSL2103 - SMPS controller IC for dimmable LED lighting
>> >
>> > This chips is a switching regulator, fed directly from the rectified 
>> > mains.
>> >
>> > I ask (we all know the answer):
>> > What will happen to your nice quiet RAK and RAL receivers when
>> > these noisy critters are installed in every house in every suburb?
>> >
>> > I say the noise from a switching LED controller will make a 12K8s
>> > as quiet as the central Australian desert at mid-day. (it's very
>> > quiet in the desert at mid-day).
>> >
>> > Is there nothing we can do so stop such lunacy on a city-wide scale?
>> >
>> > Yes, this is off-topic, but it's something of interest to all, I'm 
>> > certain.
>> >
>> > Les
>> > formerly VK2BCU
>> >
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>
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