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Re: [OM] Way OT: Power supply for low voltage LED landscape lighting

Subject: Re: [OM] Way OT: Power supply for low voltage LED landscape lighting
From: Bill Pearce <billpearce@xxxxxxxxxx>
Date: Fri, 12 Oct 2018 19:04:59 -0400 (EDT)
I was told that LED's require DC. Was I told wrong? 


I've always used miscellaneous wall warts salvaged from discarded things. 
Always worked well. 

----- Original Message -----

From: "Mike Gordon via olympus" <olympus@xxxxxxxxxxxxxxxxx> 
To: olympus@xxxxxxxxxxxxxxxxx 
Cc: usher99@xxxxxxx 
Sent: Friday, October 12, 2018 4:24:10 PM 
Subject: [OM] Way OT: Power supply for low voltage LED landscape lighting 

The transformers seem cheap enough and most seem not to rectify the current. 
There appear to be a few electronic low-voltage transformers (ELVT) which are 
new. 

I always thought LED's prefer DC to avoid flicker whereas doesn't matter a wit 
for incandescent. LED's would also rectify the current?--- and perhaps has 
implications for daisy chaining the lights. I don't have many, so voltage drop 
should be low--2 zones, max 2-3 lights on each. 

I am not sure why the plain old 12 AC output is so common. I thought this gizmo 
looked like the ticket: 

http://www.kichler.com/professional/landscape-lighting/new-landscape-lighting-products/design-pro-led-controller.aspx
 

It can easily be run by one of those Vera gizmos to control with phone 
too--though others perhaps can as well. 
Not being an engineer, thought I'd better check here. 

In the dark, Mike 
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