EMH250PS18 Power Supplies - External/Internal (Off-Board)

Voltage - Input:	80 ~ 275 VAC
Voltage - Output 1:	18V
Voltage - Output 2:	--
Voltage - Output 3:	--
Voltage - Output 4:	--
Current - Output (Max):	14A
Power (Watts):	250W
Applications:	ITE (Commercial), Medical
Voltage - Isolation:	4kV
Efficiency:	87%
Operating Temperature:	0°C ~ 70°C (With Derating)
Features:	Adjustable Output, Load Sharing, Remote Sense, Standby Output, Universal Input
Mounting Type:	Chassis Mount
Size / Dimension:	5.00" L x 3.00" W x 1.43" H (127.0mm x 76.2mm x 36.3mm)
Minimum Load Required:	No
Approvals:	CB, CE, TUV, UL
Series:	EMH
Part Status:	Active
Lead Free Status / RoHS Status:	--
Type:	Open Frame
Moisture Sensitivity Level (MSL):	--
Number of Outputs:	1

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AC-DC converters are devices used to convert an alternating current (AC) into a direct current (DC). The EMH250PS18 is a specialized AC-DC converter that utilizes the Pulse Width Modulation (PWM) technique. This device is a two-phase AC-DC converter ideal for use in applications requiring high power conversion efficiencies. The EMH250PS18 features a wide input voltage range, low ripple and noise, accuracy, and low electromagnetic interface (EMI).The EMH250PS18 is a PWM AC-DC converter that can deliver both low output voltage and high output current. The device is ideal for applications such as distributed power systems, industrial control systems, lighting systems, and many others. It features an efficient circuit design that has been optimized for minimal power dissipation, making it ideal for energy-saving applications. The EMH250PS18 also provides accurate current sensing and soft-start control.The working principle of the EMH250PS18 AC-DC converter involves the conversion of AC power to DC power through the use of a power switch. The AC power is supplied to the input of the converter, where it is rectified and then connected to a power switch. The power switch is modulated by a Pulse Width Modulation (PWM) control signal. The PWM control signal adjusts the amount of time the switch is turned on and off, which in turn changes the output voltage or current of the AC-DC converter. The output of the EMH250PS18 is regulated by the use of peak current control. This control technique is based on monitoring the output current of the converter and then adjusting the duty cycle of the PWM signal in order to regulate the output voltage or current of the AC-DC converter. This technique is effective in maintaining a stable output voltage or current, allowing for precision control.The EMH250PS18 is designed to provide high levels of efficiency, accuracy, and low power dissipation. The device can easily be adapted for use in a variety of applications, such as communications, industrial control, distributed power systems, lighting systems, and many others. The device is easy to operate and maintain, making it an ideal choice for a variety of applications.

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