[DeTomaso] Hot Dimmer Switch

[Ken Green]

      You can make a very efficient switched capacitor or switched inductor power supply, but the ones I have seen don't have a knob to vary the voltage out.  I guess there are really cheap processors available and I suppose some may have inputs for a pot and they can be programmed to control a switched power supply and thereby control the voltage output based on the pot setting.  Seems like overkill?
   
        If the lights are too bright, maybe try dimmer (lower current) bulbs first, and see if that drops the power dispated in the dimmer switch enough?  The heat you're feeling should just be proportional to the sum of the currents through all of the light it is controlling.
   
  Ken

Thomas Tornblom <Thomas.Tornblom at hax.se> wrote:
  Tomas Gunnarsson skrev:
> Art,
> 
> There is no efficiency gain to be had by switching from one rheostat ot another. They all have the same power loss at a given output voltage.

Unless one use some modern switching thing.

> 
> Tomas

Thomas

> 
> ----- Original Message ----- 
> From: "Art Stephens" 
> To: 
> Sent: den 19 mars 2007 07:45
> Subject: [DeTomaso] Hot Dimmer Switch
> 
> 
>> I ran for years with no dimmer switch for the gauges. After installing the new AutoMeter speedo and tach, I hooked up the dimmer switch again because the new units were so bright. Now that dimmer runs hot. It gets so hot that I'm pretty sure if given enough time, the bezel will be too hot to touch. My main concern here is fire. Has anyone out there replaced their rheostat with something a little more efficient?
>>
>> Art
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>>
>> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
>>
>> DeTomaso mailing list
>> DeTomaso at list.realbig.com
>> http://list.realbig.com/mailman/listinfo/detomaso
>>
> _______________________________________________
> 
> Detomaso Forum Managed by POCA
> 
> Archive Search Engine Now Available at http://www.realbig.com/detomaso/
> 
> DeTomaso mailing list
> DeTomaso at list.realbig.com
> http://list.realbig.com/mailman/listinfo/detomaso
> 
> !DSPAM:45fed8a94772274799312!
> 


-- 
Real life: Thomas Törnblom Email: Thomas.Tornblom at Hax.SE
Snail mail: Banvallsvägen 14 Phone: +46 18 444 33 21
S - 754 40 Uppsala, Sweden Cellular: +46 70 261 1372
Fax: +46 754 40 07 11

_______________________________________________

Detomaso Forum Managed by POCA

Archive Search Engine Now Available at http://www.realbig.com/detomaso/

DeTomaso mailing list
DeTomaso at list.realbig.com
http://list.realbig.com/mailman/listinfo/detomaso