From: burrynulnulfour@ppllaanneett.nnll   
      
   On 17-2-2019 22:48, default wrote:   
   > On Sun, 17 Feb 2019 10:04:52 -0500, default    
   > wrote:   
   >   
   >> I've no experience with them so any info could be helpful.   
   >>   
   >> My question is that it seems to me that there are often a series of   
   >> drivers from a manufacturer with similar prices and they all output   
   >> the same current only the output voltage changes and they call them   
   >> constant current devices.  For example a 1-3 watt may output   
   >> 12-24V/300 ma, while an 18 watt output 24-36 volts/300 ma.   
   >>   
   >> Well, if they are constant current, wouldn't it make sense to get one   
   >> with the highest voltage so it can drive more series leds, for about   
   >> the same price as a lower V output one?  I figure it would be more   
   >> versatile and allow me to add leds if that seems necessary.   
   >>   
   >> I'm toying with the idea of building a tabletop hydroponic "garden."   
   >> They get high prices for what amounts to a few LEDs and aquarium   
   >> air-pump,timer and container, some of which I already have laying   
   >> around collecting dust except for the leds and PS to operate them.   
   >   
   > I think I see the flaw in my reasoning.  Namely: heat dissipation.   
   > Taking a driver designed to excite a 18 watt string and using it to   
   > drive only one, one-watt LED would put more of a heat burden on the   
   > driver.   
   >   
   No.   
   The driver adjusts the voltage, to get the specified current.   
      
   The voltage spec just tells you how many leds you can put   
   in series.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)