Electric blanket and inverter
Found an electric blanket that the inverter does not fry. SoftHeat by Perfect Fit | Luxury Low-Voltage Electric Heated Blanket The control and blanket run on 18 volt DC, separate power supply fe...
Forum Discussion
Sunset Gypsies wrote:valhalla360 wrote:
Unless I'm misreading, it doesn't need a DC power source. It's 120v AC powered but the heating circuits are DC. Conversion is all internal to the control unit.
Changing the voltage won't change the efficiency. Wattage is what determines heat output. Wattage is Volts x Amps If you crack open the controller and mess with the voltage assuming you don't increase the amps, you do reduce power consumption but you could achieve the same effect by simply turning down the thermostat so it runs for a shorter period of time.
Yes it does work fine as it is. I was referring to power loss in the main inverter (12vdc to 120ac) and the blanket's power supply (120vac to 18vdc). A 12vdc to 18vdc converter replacing the blanket's power supply and running of the 12 volt circuits might be more efficient as it would remove the power loss in the inverter, but probably not enough to justify the cost of the converter.
That makes more sense but as you say, how much power will you really save? Also, I'm betting the control head is not designed to be pulled apart and rewired, so how sturdy will it be an how much cost and effort will be involved.
