New breakthrough in solar controller technology

The solar controller is a common equipment for automatic solar water supply. It also has the function of displaying the temperature and water level of the solar water. Usually, a 5W transformer is used. Using a 2W transformer can make the controller work normally, and it can be applied only with a slight modification to the circuit, and external devices such as solenoid valves do not need to be modified. Analysis of the technical principle of the Solar Energy Industry Alliance: After the electromagnetic action devices such as solenoid valves and relays are completed, they only need a small current to maintain their action state. The current can be maintained in the open state. In the past, most of the power consumption of the controller was consumed on the solenoid valve and relay. When the voltage of the solenoid valve was reduced from 12V to 7V, the current would also be reduced by the same proportion, so that the power It will be reduced to 34% of the original. The original 3.2W solenoid valve only needs 1.09W of electricity. Some readers will ask: We all know what you said, but the question is how to make the 2W transformer start the 3.2W solenoid valve? voltage to save energy. In fact, let me repeat this point again. Those who are proficient in electronic technology will understand. The 2W transformer refers to the average power. The 220V AC we use is the effective value of 220V, and its maximum value should be multiplied by 1.414 times. Theoretically speaking, a 2W transformer The maximum instantaneous power will reach 4W. If the parameter of the voltage regulation rate of the upper transformer is considered, the maximum instantaneous power will be larger. In this way, the problem can be solved by using the maximum clockwise power output of the transformer to start and open the solenoid valve, and then maintaining it with a small voltage and current.