Heating rate control method for pipeline heater

There are two simple ways:
1. Using diode half-wave rectification to change the effective value of AC, to achieve the purpose of changing heating power and heating speed; this method is the most widely used, and its advantage is that the circuit structure is simple and easy to operate.
2. Transforming, using a small transformer to transform, the advantage is that it can be adjusted in multiple gears. The disadvantage is that the circuit structure is more complicated and the production cost is high.