Login | Sign Up
links Home
divider
About us
divider
Services
divider
Products
divider
Brands
divider
Applications
divider
Price & Stock
divider
News
divider
Enquiry
divider
Contact Us
divider
Career rt
b
 
Technical Guide
white
bullet Sensors
white
bullet Safety Components
white
bullet Switches
white
bullet Automation Systems
white
bullet Relays
white
bullet Auto Identification Systems
white
bullet Control Components
white
bullet In Addition
   
 Technical Guide > In Addition

Power Supplies

 

OMRON provides many types of general-purpose Power Supplies, such as the type mounted to DIN rail or the type built into equipment. OMRON also provides the S8VS which provides notification of replacement timing, and the Buffer Block that handles momentary power interruptions, and other highly reliable Power Supplies.

 

 

What is a Power Supply?

 

Commercial AC power distributed from power plants cannot be supplied directly to the ICs and other electronic components built into electronic devices in automated office and factory equipment without destroying the components due to the high voltage of commercial AC power. Devices called power supplies or regulated DC power supplies are therefore required to convert commercial AC power into regulated DC power to drive ICs and other electronic components.

 

 

Regulated DC Power Supplies

 

The methods for controlling Regulated DC Power Supplies can be largely classified into the following two types. Switch-mode Power Supplies and linear Power Supplies are generally referred to as Power Supplies. Currently, switch-mode Power Supplies are the most prevalent.

Regulated DC Power Supplies consists of Switch-mode Power Supplies and Linear Powr Supplies.

 


Switch-mode Power Supplies


Switch-mode power supplies convert commercial AC power into the required high-frequency DC power using the high-speed switching of semiconductors. Switch-mode power supplies are so compact, light, and efficient that they are used as power supplies by most electronic devices.

 

Converts AC into DC by rectifying and smoothing AC. Steps down the voltage with a high-frequency (40 to 200 kHz) transformer. The primary and secondary sides are insulated from each other. Controls the high frequency switching pulse width and frequency to stabilize the output.

 


Advantages
 

. Highly efficient.
. Compact, and light.
. A wide input voltage range.

 


Disadvantages
 

. Switching noise is generated.
. Large inrush current on primary side.

 


Power Supply Selection
 

Basic Selection Points:
Factors to consider when selecting a Power Supply are provided in the following diagram.

 

(1) Input Voltage  (2) Output Capacity (Voltage × Current)  (3) Safety Standards  (4) Shape and Mounting Method

 

 

 

b
b   b
b
b