The heating speed of the electric heater is mainly through two methods:
1. Use diode half-wave rectification to change the effective value of alternating current to achieve the purpose of changing heating power and heating speed. The advantage is that the circuit structure is simple and easy to operate.
2. Transform the voltage, use a small transformer to transform the voltage. The advantage is that it can be adjusted in multiple stages, but the disadvantage is that the circuit structure is more complicated and the production cost is high.
