The resistance of the 800 healthy pot is 60.5 ohms, and the resistance R=220×220÷800=60.5 ohms, which is determined by the rated power of the heat pipe and the power supply voltage. The general power of 1000W is 48? (power supply voltage is 220V), and the resistance of incubator with power of 1500W is about 32? (power supply voltage is 220V), and the resistance of the health pot with power of 2000W is about 24? (Power supply voltage 220 volts)