I want to make an electric/heating blanket that will work with heating electric cable.
I will use a computer AC adapter that output 19V 3.16A, and this dimmer to regulate the heat and a heating cable sewn in a 1.60x1.20m blanket.
I have some trouble to find out which type of heating cable will be better for my project.
Knowing that the cable could touch my skin, it should not be to hot: the ideal temperature of the cable should be around 40 (45°C/113°F start to burn the skin). I have seen that, at a constant voltage, the heat depends on the current which depends on the resistance of the cable and the length of the cable (I guess I will need between 8 or 9 meters of heating cable).
Since I need a cable that will generate a temperature of about 40°C for 8 meters of cable, which type of cable will be the best?
- Carbon fiber flex heater tape is too expensive.
- I have seen Kanthal and Nichrome wires, but they don't seem to be coated so they seem dangerous.
- This silved plated copper looks good (Polytetrafluoroethylene PTFE coated).
- Also this Carbon Fiber Heating Cable seems great because it's infared heat but I can't find one that will work on a 12V-24V tension.
- Do you have any other suggestions?
Since I’m living in Europe, I'll be very grateful if you could advise me on the type of material but also its precise specification (diameter in AWG or mm, Ohms/meter...) to be able to buy the equivalent here in Europe.
Thanks a lot for your help!