The working principle of the analog controlled economical power regulator is as follows:

1、 Signal input

The analog control signal is usually a DC voltage or current signal, which represents the desired output power level. For example, a 0-10V DC voltage signal, where 0V corresponds to the minimum output power of the power regulator and 10V corresponds to the maximum output power.

2、 Signal processing

After receiving the analog control signal, the internal control circuit of the power regulator will process the signal. Firstly, convert the analog signal into a digital signal for precise control and calculation.

2. The control circuit calculates the corresponding triggering angle based on the magnitude of the input analog signal. The triggering angle determines the conduction time of the thyristor in the power regulator, thereby controlling the output power.

3、 Thyristor control

1. The power regulator mainly adjusts the output power by controlling the conduction of the thyristor. A thyristor is a semiconductor device with switching characteristics, which conducts when a trigger pulse is applied to its control electrode.

2. Based on the calculated trigger angle, the control circuit sends a trigger pulse to the control electrode of the thyristor at a specific time during each cycle of the AC power supply, causing the thyristor to start conducting at the corresponding angle.

After the thyristor is turned on, the AC power supply will pass through the load and provide power to the load. By changing the triggering angle, the conduction time of the thyristor can be controlled, thereby adjusting the output power.

4、 Feedback and Adjustment

In order to achieve precise power control, some power regulators are also equipped with feedback circuits. The feedback circuit can monitor output power or load current, voltage and other parameters, and feed these parameters back to the control circuit.

2. The control circuit compares the feedback signal with the set analog control signal, and then adjusts the trigger angle to achieve accurate adjustment of output power. For example, if the actual output power is less than the set value, the control circuit will increase the triggering angle and increase the output power; On the contrary, if the actual output power is greater than the set value, the control circuit will reduce the triggering angle and decrease the output power.