-=> Mike Ross said to Jasen Betts
 -=> about "VEHICLE LED'S" on 09-13-03  23:22.....

 MR> A lamp's filament tends to behave as a constant power load. Thus as

No that isn't right, otherwise dimmers wouldn't work as well as
they do. Constant power gives constant brightness.

You can check this easily with a variable power supply and a
voltmeter and an ammeter. I've done it many times.

More accurate to say the usual incandescent lamp acts rather as a
constant CURRENT load, due to its PTC characteristics.

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... An ounce of application is worth a ton of abstraction.
___ Blue Wave/386 v2.30

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