I have one of those 1500 watt radiator style portable
electric heaters. Love it
However, rather than the built in thermostat turning
the unit OFF?ON every 15 min's or so, I was thinking
it would be more efficient to use an SCR dimmer control
to vary the amt or power it gets?
Does anyone know of an SCR control hefty enough to
handle this kind of resistive heating load??
use a diode, it will run at 1/2 power... or buy a stage type dimmer,
unless you are an electronics engineer you will not be able to design
an SCR circuit, also many SCR circuits will generate radio
interference Try the diode first...
CAUTION, when you wire it up, think about what might happen if the
diode shorts, you don't want this thing to ever be stuck in the on
mode such that the thermostat can't turn it off..i.e fire hazard..
The SCR is not the component dissipating 1.5KW, the heating element is doing
that. Assuming 120VAC, the SCR is required to be able to handle 12.5 amps,
which would put it as a basic stud-mount SCR, which can be expected to
dissipate about 20 watts (as heat) with the device passing the maximum load.
Build it yourself for a few bucks, assuming there is not a little fan inside
the unit (in which case you'd have to find a way to feed the fan whatever
constant voltage it wants).
Or spend fitty bucks:
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.