AC DC Converters

LEA150F-18-Y converter is a self-excited switching regulator, and comes as a complete unit. This unit includes an automatic over-voltage circuit, which protects the converter from damage due to over-voltage fluctuations. The unit also contains a special circuit arrangement, which compensates for input voltage or load current fluctuations, resulting in a robust and reliable power converter solution.

Application Field

LEA150F-18-Y has wide application area. It is being used in industrial automation, medical robotics, controller, LCD or TV, LED lighting, security panel, surveillance cameras, radio equipment, intelligent motor control, and many more. This converter covers any application where a voltage need to be adjusted and current needs to be regulated.

Working Principle

The LEA150F-18-Y converter works on the principle of inductive charging. It comprises a transformer which is connected to the primary circuit and to a rectifier and a regulator. When the switch is opened, energy stored in the inductance of the transformer’s primary winding charges the rectifier, which in turn charges a capacitor connected to the regulator output. The capacitor maintains the output level when the switch is closed, resulting in a stable output voltage.

The inductive charging circuit creates voltage variations that could be sensed by the rectifier’s positive-clamping circuit. The sending transistor in the driver circuit monitors this feedback and adjusts the output voltage accordingly. The feedback also triggers the input transistor to open and then close. This causes the primary circuit’s voltage to repeatedly rise and fall, working like a continuously-adjusting cycle.

When the voltage output of the regulator is greater than its preset level, the positive-clamping circuit disconnects the load from the driver circuit. The output voltage will then start to decrease, and when it reaches the preset level, the driver will re-engage the output and repeat the cycle.

Conclusion

The LEA150F-18-Y converter is an effective power solution which has wide application and reliable results. Its inductive charging principle provides reliable and accurate voltage regulation, and this makes it a popular choice for industrial, medical and many other applications.