Electronic Components

Low Noise Power Supplies

Switching Power Supply

Introducing our ultra low noise switching power supply products, using an original method and designed to meet the power source demands of high precision measurement instruments and medical devices. Offering ultra Isolation transformer products to attenuate common mode noise as well as systems.
As part of the Daitron Group business policy of integrating manufacturing with sales, marketing efforts will be focused on a new series of products aimed at scoring high in customer satisfaction.

Technology summary

Daitron Ultra Low Noise Power Supply Products

Ultra Low Noise Switching Power Supply

Daitron offers low noise switching power supplies to meet your needs in order to design noise sensitive applications and instruments. Our power supplies also bring a significant benefit for Medical applications needing low leakage current of 40 to 100uA, all with 4KV reinforced insulation.

RFS50A series  50W Ripple Noise 1mV

LFS50A series  50W Ripple Noise 10mV

LFS150A 150W Ripple Noise 10~13mV

PFS300A series 300W Ripple Noise 10mV

Ultra Low Noise Switching Power Supply

Daitron has been developing and producing UPS products meeting customer design requirements for many years, including Semiconductor Manufacturing Equipment, Medical Diagnosis, Inspection and Test Instruments.

Get rid of Linear Power Supply

Daitron provides clean power solution to the noise sensitive applications.
In most cases, design engineers face many difficulties in choosing a critical power source for their noise sensitive design applications.
If you need a low noise power source, a linear power supply is essential but you also have to accept its heavy weight, huge size and low power efficiency technology along with its expensive cost.
On the other hand, if a low cost is needed in a small foot print and space, you will have to accept a noisy switching power supply.
The ideal solution to this dilemma is the compromise provided by Daitron.

INTRODUCTION ―The main features of our product

Feature 1:Ultra Low Noise

Daitron Power Supply Products dramatically reduce output noise down to 10mVp-p by using component resonance topology know-how.
In doing so, they vastly exceed VCCI/FCC Class B requirements and our customers can benefit from a reduced need for noise immmunity efforts, which in turn saves them on design time and a number of components needed for design.

Feature 2:Small, Light weight and High efficiency

Daitron Power Supplies bring the benefits of switching power supplies along with small, lightweight and highly efficient features compared to linear power supplies.

Why Daitron Power Supply

●Improve S/N Raito
●Small, Light Weight and High Efficiency

 Linear Power SupplyHard Switching Power SupplySoft Switching Power Supply (Daitron)
Noise levelLowHighLow
Leakage CurrentLowHighLow
Component CountLowHighLow

Product features

Feature 1:Ultra Low Noise

Noise data comparison with Hard Switching Topolog

Daitron Power Supply has succeeded in dramatically reducing noise compared to Hard Switching power supplies.
Noise levels are less than 1/10 of those compared to Hard switching power supplies, exceeding VCCI/FCC Class B requirements.
This feature benefits design engineers by saving resources and efforts otherwise needed for noise immunity.

Component Resonance Topology

Daitron Power Supply succeeded in its design goal to provide the lowest noise output power for our customers’ applications. For this we feature built-in Soft-switching topology based technology that reduces noise low enough to meet customer needs for the most noise-sensitive systems.
The topology creates a clean current waveform and the Daitron engineering design team carefully created a synchronization of current & voltage timing at the “Zero-Cross” point in order to achieve our goal to operate our power supply at the lowest noise level possible. For this reason, our ultra low noise power supply can meet our customer’s need to get an ultra low noise switching power supply in a small and light weight package.
Our ultra low noise feature brings an additional benefit to allow our customers’ design engineers to save their design resources by reducing the need for system designers to include external output filters, thereby saving time, money, and effort that could be better used elsewhere.

Feature 2:Small, Light Weight and High Efficiency

Compared with a linear power supply, a Daitron Power Supply is very small, light weight and highly efficient.
Our customers can easily replace huge, heavy and low power efficiency linear power supply designs with ultra low noise features more suitable for their next challenging noise sensitive application

Feature 3:Competitive price range

Daitron Power Supply is a key solution for design engineers to save resources.
The Ultra Low Noise feature can reduce filter circuit design effort.
The Low leakage current feature can be a beneficial feature for medical applications.

Daitron Power Supply Comparison Chart

CAD data(2D)dxf
CAD data(3D)igs
Electrical CharacteristicsPDF
EMC,Immunity Test & Reliability dataPDF
To view these files, you may need to install specific application software to open these files by your own risk
Superior Ultra Low Ripple Noise   
Ultra Low Ripple Noise 
Low leakage current
Low Radiated Emission
Low Conducted Emission
World Wide Input Range
Halogen Free (PCB)
Safety Standard60950-1UL, CSA, ENUL, CSA, ENUL, CSA, ENUL, CSA, EN
RoHS Compliant
Harmonic Distortion Limitation
Maximum Output Power50W50W150W300W
Input Voltage85-264V85-264V85-264V85-264V
Ripple Noise (mVp-p)11010 to 1310
Vout5V✓ *
* Please refer to the output power derating curve specification.

Application Examples

●SEM/TEM(Scanning Electron Microscopy/Transmission Electoron Microscopy)
Improve Signal to Noise Ratio
●Surgical Lights/Diagnosis
Ultra Low Leakage Current than Medical Requirement.
Ultra Low Conduction Noise & Low Emission Noise feature makes power supply design smaller and lighter than ever.
Save resources for Medical approval in customer’s design*
(* Depends on product series)
●Nanoscale measurement. Image sensing and image processing
Minimize noise interference as less as possible from the power source.
Reduced Audible noise and improved S/N ratio will reproduce close to the real sound.

Value Added Services we offer

Daitron also offers system power consoles based on our Low Noise Power Supply products for customers who need off-the-shelf, one stop shop power supply for multiple outputs requirement. Please consult with our local sales engineers for more information with your power requirements.

Distribution partners for Daitron power supply

 Belgium & Netherland

A&C Solutions     www.ac-solutions.be

Slachthuisstraat 68 bus 6 2300 Turnhout, Belgium
Phone: +32 (0)14 73 53 70


Systemtechnik LEBER GmbH & Co. KG    http://leber-ingenieure.de/

Haimendorfer Straße 52, D-90571 Schwaig, Deutschland
Phone: +49 911 215372-0


CL-Electronics GmbH    www.cl-electronics.com

Furtbachstrasse 4 8107 Buchs ZH, Switzerland
Phone : +41 (0)44 857 12 00


Divisoft AB    http://www.divisoft.se/

Sturevägen 3; SE-177 56 Järfälla; Sweden
Phone: +46 (0)8 540 248 09


Niev Pacific Connections     http://4niev.com/

5 Volman St, Tel Aviv 69400 Israel
Phone: +972-722-332263


Brilliant Electro-Systems Pvt.Ltd.     www.brilliantelectronics.com

710 – Dev Plaza, 7th Floor, Opp. Fire Station, S.V.Road, Andheri (West),Mumbai – 400058. India
Tel.: +91-22-26719475 / 26201408 || Fax: +91-22-23887063


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Please feel free to inquire if you have any questions about our products.