JWS5012

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The JWS5012 is a type of AC DC converter current regulator. It is mainly used in the fields of adjustable power supplies, motor speed adjustment, motor soft-start, and temperature control. The device contains a voltage sensor, a PWM (Pulse Width Modulation) controller, a high-performance current/voltage regulation circuit, a power stage, and other functions within a single integrated circuit.

The main working principle of the JWS5012 is to detect the output AC voltage of the AC power supply, compare it with a referential voltage, and then control the duty cycle and amplitude of the power switching device in order to regulate the output AC power system.

The JWS5012 features a voltage sensor circuit with a voltage range of 0-20V, and a nominal valued reference voltage of 5V. And the reference voltage can be adjusted by using a resistive voltage divider.

The PWM controller circuit limits the PWM output duty cycle to a maximum of 90%. By varying the duty cycle from 0 to 90%, the average value of the output AC voltage can be fully controlled, thereby accomplishing the current/voltage regulation.

The power stage circuit of the JWS5012 is made up of an input rectifier bridge, a power switching device, and an output inductor, etc. The power switching device can be a BJT (Bipolar Junction Transistor) device or a MOSFET (Metal Oxide Semiconductor Field Effect Transistor) device, and the input rectification can be either alternating current or direct current.

The current/voltage regulation circuit of the JWS5012 contains input isolation resistance, a current sense resistor, a voltage sense resistor, current and voltage conversion amplifiers, and other components. The circuit functions to regulate the output voltage and current of the power output.

The device also includes current limiting circuits with both electrical and thermal protection functions. The electrical protection function is triggered when the current exceeds a preset value, and shuts down the power stage. The thermal protection function is triggered when the temperature of the power stage exceeds a preset value and limits the power of the device.

In summary, the JWS5012 AC DC converter current regulator is mainly used in adjustable power supplies, motor speed adjustment, motor soft-start, and temperature control. It can provide high-performance current/voltage regulation and thermal protection, and the combination of its various features makes it a versatile and dependable device for many applications.

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