Ideas anyone? Making electric coals
I intend to build an electric coal (for my hookah) and I need advice from all you electronic dudes and dudettes! If I use nichrome what length and gauge should I use to achieve the following
1. 12 V power supply OR 220 VAC (South Africa)
2. Minimum 400 Celsius / 700 Fahrenheit
3. Preferably 600 C / 1112 F
The element will be wrapped around a "doughnut" which I will fabricate from heat resistant cement, it will be +/- 2 inches diameter with an inner diameter of about 3/4 inch and 1/2 inch thick, therefore keep in mind that the nichrome must be able to heat all that ceramic.
If, during my testing, the nichrome expands sufficiently to short out then I'll cut grooves in the "doughnut" to keep them in their places. In the image orange represents nichrome wire ONTOP of the "doughnut" while yellow is BELOW
I am in no way adept at electrickery.
As a side note of lesser importance, any ideas on building a circuit to add a dimmer or potentiometer to the mix to regulate the temperature?
Thanks in advance!