New Series Of Enclosed AC-DC Switching Power Supplies

Power supplies for 15-150W in particularly flat housings

The power supplies of the new LMxx-23Bxx series with their first-class electrical, climatic and mechanical parameters are an ideal choice for demanding applications in many areas of application.

The new AC / DC power supplies of the LMxx-23Bxx series can be used very universally in the industrial, laboratory and consumer sectors. Typical applications are e.g. Measuring and control devices, automation equipment, distributed networks, security technology, smart home, IoT and household appliances.

The power supplies of the LM series have a highly compact metal housing and can be operated with either AC or DC voltage. New devices with particularly wide input voltage ranges of 85-305 VAC or 100 / 120-430 VDC were recently introduced under the name LMxx-23Bxx. The addition to the program includes a total of seven series with output powers of 15W, 25W, 35W, 50W, 75W, 100W and 150W, each of which has up to seven product versions with an output voltage of 3.3V, 5V, 12V, 15V, 25V, 36V or 48V.

The isolation between input and output is designed for voltages up to 4 kVAC and the EM interference emission fulfills the requirements of class B of EN 55032 even without additional external components high efficiency of the new power supplies. The output is protected against short circuit, overcurrent and overvoltage; a range of -30 ° C to + 70 ° C is permitted for the temperature at the place of use. A protective coating of the housing (article number with suffix “Q”) and a protective cover for the connections (article number with suffix “C”) are available as optional equipment.

Power supplies for 100-320W with active PFC and wide range input

The power supplies of the new LMFxx-23Bxx series are ideal solutions for demanding applications.

As they are equipped with high peak input voltages, the LMFxx-23Bxx power supplies have wide input voltage ranges of 85-305 VAC or 120-430 VDC. This makes them suitable for connection to networks with nominal voltages of 115V, 230V and 277V and remain operationally reliable even in the event of significant transient or long-term overvoltages. The new series deliver output powers of up to 100W, 150W, 200W and 320W and nominal output voltages of 5V, 12V, 15V, 24V or 48V, which can be trimmed with a potentiometer. An active power factor correction (PFC) ensures, among other things, ensure that the harmonic currents always remain well below the relevant limit values ​​for electromagnetic interference emissions according to EN 61000-3-2.

The isolation between input and output is designed for voltages up to 4.0 kVAC. Functions for protection against short circuit, overcurrent, overvoltage and overtemperature and an MTBF over 250,000 h ensure safe and reliable operation. A protective coating of the housing (article number with suffix “Q”) or a protective cover for the connections (article number with suffix “C”) are available as optional equipment.

Application Areas

The new AC / DC power supplies of the LMxx-23Bxx + LMF100 / 150/200 / 320-23Bxx series can be used very universally in the industrial, laboratory and consumer sectors. Typical applications are e.g. Measuring and control devices, automation equipment, distributed networks, security technology, smart home, IoT and household appliances.

Contact Karl Kruse at Schirmer Strasse 59, 40211 Düsseldorf by phone at + 49-211 27403530, e-mail to .

You will find the perfect switching power supplies for your application here.

EC Fans – Growing In Popularity

Energy conservation is of ever increasing importance in today’s world. About 25% of the primary energy consumption in the residential and commercial sectors is used by electric motor-driven systems and components in appliances and equipment. Replacing existing equipment with advanced energy-efficient motors results in a substantial reduction in energy usage and cost.For today’s demanding applications that require increased electrical efficiency,EC (electronically commutated) fans represent a significant advancement in power savings technology, providing cooling and air flow solutions.

What Are EC Fans

EC fans are powered by brushless DC motors, which are also known as EC motors. Due to its inherent design that uses permanent magnets to generate a secondary magnetic field rather than copper windings, DC motors can be up to 30% more efficient than AC motors . Brushless DC motors are typically 85-90% efficient while brushed DC motors are generally in the range of 75- 80% efficient; the brushed motors lose efficiency from brush friction. The increased efficiency of the brushless motor means that less energy is lost as heat, while more energy is turned into rotational force and therefore power.

EC motors are controlled by external or onboard electronics that convert the incoming AC power signal to the DC voltage needed by the motor. The electronic circuitry performs the function of the mechanical commutation that switches the direction of the current and the magnetic field polarity to induce the motor’s rotation. As adjusting the power to the EC motor controls the EC fan speed, thereby improving performance, the design allows for more accurate and efficient motor control.

Why Use EC Fans

As long as the interface between the fan and the device is left unchanged, EC fans can be used in most applications where AC fans are used.When this interface is properly designed, EC fans can be used as “drop-in” replacements for AC fans. Compared to AC fans, EC fans are the same size while offering the same or higher airflow capacity — all with significantly less power.

Because they have built-in variable speed control a A large portion of the energy efficiency of EC fans occurs . Small reductions in the fan speed lead to large reductions in the power requirement, since the relationship between the fan speed and the power required by the fan is a cube function. Precisely controlling the fan speed to match the airflow demand of the application can result in substantial energy savings.

High efficiency EC fans have gained popularity and are being used in applications where there is a need to meet energy efficiency regulations, yet they offer other advantages as well. EC motors avoid the sparking and potential electromagnetic interference of brushed motors. They have longer service life due to the smaller heat losses and lower operating temperatures. The lower operating temperature means that the fan does not have to do extra work to remove wasted heat that is generated by the motor itself. EC motors offer a wide operating window of fairly constant efficiency over a range of speeds due to their variable fan speed control, when compared to AC motors, which tend to have peak efficiency at a single speed. In addition, EC motors require little to no maintenance and provide increased reliability. Since EC fans have lower operating costs, this leads to shorter payback periods for new equipment.

EC fans are ideal for use in major home appliances such as refrigerators, freezers, ovens, range hoods, microwaves, dishwashers and clothes washer-dryers.

Originally used only in high-end appliances, they are now used in high volume/mass market appliances due to their energy savings advantages (i.e., their higher efficiencies). Additional applications may include air conditioning units, heat pumps, furnace fans, dehumidifiers, beverage vending machines, automatic icemakers, commercial appliances, commercial chillers, duct fans for ventilation, condenser units and extraction fans for removing smoke and exhaust. However, the biggest uses for motor-driven elements in both the residential and commercial sectors are refrigeration and HVAC (heating, ventilation and air conditioning).

Market Requirements for Energy Usage

Government eco-design regulations and marketplace requirements for energy efficiency standards are driving design considerations, in the consumer appliance market.Energy efficiency has become one of the performance specifications for new appliances. The high electrical efficiency of EC fans aids in meeting these requirements.

In the U.S. market, the Department of Energy (DOE) is responsible for upholding the minimum energy efficiency standards for household appliances that were established in 1987 as the National Appliance Conservation Act. Under the Federal Trade Commission falls, labeling appliances with the ENERGY GUIDE, which lists energy consumption, efficiency and operating cost information. The ENERGY STAR label, a voluntary program under the Environmental Protection Agency, has even more strict requirements on energy savings. The Building Technologies Office of the DOE has outlined potential energy savings using EC motors in commercial and residential equipment.

While others are in process, some energy conservation standards have been established so far.

Examples of some of these standards are as follows:

Residential refrigerators and freezers – 76 FR 57516 (September 15, 2011)
Residential clothes dryers – 80 FR 16309 (March 27, 2015 – proposed rule)
Commercial and industrial fans and blowers – 81 FR 75742 (November 1, 2016 – proposed rule)
Residential mechanical ventilation system fans – 82 FR 2857 (January 10, 2017)
The European Union established two eco-design directives on minimum energy efficiency requirements. Directive 2009/125/EC extends the requirements for energy-related products (ErP) which help to reduce electrical usage, such as insulation materials, while Directive 2005/32/EC sets the requirements for energy-using products (EuP) such as household appliances.

Several energy conservation standards have been established, and others are under consideration:

Household refrigerators – Commission Regulation (EC) No 643/2009
Household dryers – Commission Regulation (EU) No 932/2012
Domestic ovens, cook tops, and range hoods – Commission Regulation (EU) No 66/2014
Professional refrigeration units (storage cabinets, blast cabinets, condensing units and process chillers) – Commission Regulation (EU) 1095/2015.


Home appliances, those that operate continuously, such as refrigerators and freezers, provide the best opportunity for energy savings. Improvements on features such as seals and compressors, the usage of vacuum panels for added insulation, and the switch to LED lighting made some reduction in energy consumption for these appliances. The best opportunity for energy savings offers the use of EC motors and fans. Fans and motors are used both inside the refrigerator, to circulate air around the coils and maintain specified temperatures, and outside, to cool air around the condenser.

Range hoods provide another opportunity for using EC fans. While not in continuous operation, the function of a range hood, or exhaust hood, is to remove heat, steam, fumes, smoke, odors, grease and airborne particles in the area above a cooktop by means of an electric fan. To remove all these potential contaminants while not being so noisy that it is never used, the fan needs to be sufficiently powerful . In a more energy-efficient way EC fans provide both of these functions. As the appropriate fan speed can be selected as needed, Dual-speed range hoods provide even greater energy savings.

Washer-dryer combos and Clothes dryers (which, while more common in the European market, are growing in popularity in the U.S. market) are a third example of home appliances where EC fans provide a great benefit. To remove moisture from the clothing EC fans are used to bring hot air into the dryer . The humid air is either sent out through an exhaust vent or passed by a heat exchanger to remove moisture through condensation before more hot air enters the dryer. Increases in air flow performance are provided by EC fans, and this improves the energy efficiency of these appliances, while their lower noise level improves customer satisfaction.

Central air conditioning systems use several motors, one each for the compressor, the outdoor fan and the indoor blower. To circulate air throughout the ductwork a similar indoor blower is used in furnace systems. Replacing existing AC fans with more energy- efficient EC fans offers the highest potential savings due to the variable fan speed motor, although maximum energy savings can only be achieved if the entire system, including the compressor, is designed for variable speed. Also, running a furnace fan at a reduced speed may require it to operate for a longer time period, reducing some of the savings.


To meet the more stringent energy efficiency standards in place EC fans are being used in both the U.S. and European markets. EC fans can be used as drop-in replacements for less efficient AC fans, by maintaining the same interface between the fan and the appliance. EC motors can drive both axial and radial fans, as needed by the specific application. Orion Fans will be introducing a family of EC fans and blowers offering low power, dual speed, energy-efficient cooling solutions. Ranging in sizes from 60mm to 280mm, some of these EC series fans feature universal voltage input making them easy to design in for a wide variety of applications. Enabling customers to meet energy-consumption requirements from agencies like ENERGY STAR, they offer energy savings of up to 50%. Additional models and sizes of EC fans will be available from Orion Fans.

OLED, LCD, TFT And Customized Display Solutions For Industry

Karl Kruse GmbH & Co KG, based in Kaarst is now the authorized distributor for OLED, LCD, TFT and custom displays for the Chinese manufacturer Tsingtek displays Company Ltd for Germany, Austria and Switzerland. As a specialized partner to display the processing industry, it is our strength in customer-specific solutions.

The focus of the products are the application areas and target groups of customers with applications in automotive, measurement, analysis, medical, audio and video, energy, security, household and water treatment technology, telecommunications and household goods and many more.

Tsingtek Displays Company Ltd of China, one of the leading suppliers of display products in China. Established since 2002, Tsingtek uses the latest high-tech techniques and processes to design and produce displays that range from a simple LCD alphanumeric component to the more complex LCD and OLED Graphic Modules. Their advanced production facilities utilize COB, SMT, COG, and TAB processes to support the production of standard and customized display modules with many font, voltage, power and temperature options.

Highlights at the Embedded at booth 268, Hall 1

At Embedded in Nuremberg from 24 to 02/26/15 the Kaarster Karl Kruse shows GmbH in cooperation with the company Open China Gateway in Hall 1, Stand 268 amd the wide range of display products, including LCD, OLED, TFT and custom modules.
For signed visitors, we keep free admission tickets. Please contact to arrange an appointment and tickets please email and

Overcurrent Power Protection For Industrial Applications

The AirMatrix® Family (mains voltage fuses) has been developed especially for the over-current protection of AC voltage circuits and is widely used in power applications. Based on an innovative technological platform, AEM (Sales Karl Kruse) has successfully developed the family with unique polymer materials, product design and manufacturing process. AirMatrix® fuses have a higher reliability, stability and PPR.
AEM’S AIRMATRIX 2410 is the industry’s smallest fuse with 250VAC. The operating temperature of -55 ° AIRMATRIX operates at up to + 125 ° C. The series met with several safety standards such as UL, PSE, TUV and CQC.
The AIRMATRIX surface mount devices (SMD) are lead-free, halogen-free and RoHS 2A (250VAC / 125VDC), 2.5A – 10A (125VAC / 125VDC) and 12A – 20A (65VAC / 65VDC) 0.5A.
As a distributor of AEM we are specialist for fuses, those will fulfill important functions in LCD TV, LED Lighting, Battery Pack protection, telecom / datacom, computer server / storage system, power adapters, backlight drivers and in industrial applications and medical technology.

AC / DC Solution For An Efficient Auxiliary Power

Lauma and Karl Kruse cooperate

Karl Kruse is now an authorized distributor for Micro Switch Mode Power products from the Italian manufacturer Lauma Elettronica for Germany and the rest of Europe.

The agreed cooperation Karl Kruse expanded its product portfolio tohigh-quality micro switch mode power products in the SMR and SML series.
The smallest modules of SMR20 are very small, consumes between 2.5 to 15 W at 70˚C and have standby power dissipation is 0.15 W. dimensions are 23,5×23,5x17H.Die high quality products are certified TA 70 ˚-90˚-105˚.
The low standby power consumption <200 mW, will help to speed up future designs as you meet the EUP regulation <500mW.
The system integrates the bridge rectifier, power filters, switching and Power Transmission, Transformer, secondary rectification, filtering capacitor, isolated feedback network to produce a regulated output voltage of 24 V DC 3.3VDC.

“These new SMR products can replace EI transformers because they have the same pin-out,” said Klaus P. Kruse.
IECEE all UL, UL eu, UL Class 2, CE approved – The products are RoHS compliant.

Lauma Elettronica’s SMR20, SMR30, SMR38, SMR42 and SMR48 are flyback converter with galvanic isolation between the AC input and DC output. The output voltage is controlled by a closed feedback loop.

How Karl Kruse GmbH & CO KG Solves Obsolescence Issues For Electronic Industry

OEMs face the risk of electronic component obsolescence daily and we are aware that our customers have come to a avoid a disruption of the supply chain expect, “says Klaus Kruse, CEO of Karl Kruse GmbH & Co KG. For many years as an obsolescence specialist Karl Kruse GmbH & Co. KG works constantly on the optimisation of obsolescence strategies. In the focus stand solution attempts, beginning by the search of alternative components, 100% of retraceability of the components, up to the protection from obsolescence like read time Buy, EOL – and PCN service etc.

Karl Kruse offers alternative components of various manufacturers and is also an authorized distributor for Calogic and Tsingtek.

Calogic offers a range of reliable working and long-term available standard Replacement diodes, JFETs and MOSFETs. Especially the obsolete JFETs Vishay / Siliconix, there are of Calogic. Calogic designed and manufactures discrete and analog ICs for the use of automation, computers, instrumentation, medical applications, power management, Transportation and Telecommunications.

“We can offer a very successful alternative to the discontinued MOSFET BSS83 NXP locate and this have been able to qualify for the bill at our OEMs in the Automilbranche and industry. Even devices with wired enclosures, such as TO-92, there are still at Calogic” says Klaus Kruse

“The problems with displays we have known and have been working for approximately 1 year with great success with the company Tsingtek together. Our customers in the medical, industrial, air -and- space need for your products a minimum life of 5 years or more” says Klaus Kruse.

OLED, LCD, TFT and customized display solutions for industrial and commercial. Tsingtek is a leading provider of display products in China. Founded in 2002, Tsingtek uses the latest high-tech methods and processes to design and produce displays, ranging from a simple LCD alphanumeric component to more complex LCD and OLED graphics modules. Your use modern production COB, SMT, COG and TAB processes to assist in the production of standard and customized display modules containing many fonts, voltage, power and temperature options.

The focus of the products are application areas and target groups of customers with applications in automotive, measurement, analysis, medical, audio and video, energy, security, budgetary and water treatment technology, telecommunications and houseware and many more.

Iridium Solutions From Maxtena

Maxtena Iridium Solutions
Maxtena’s line of Iridium antennas are fully Iridium network certified and designed to compliment a wide range of applications, including fleet, asset & personal tracking, handheld devices, satellite telephony, utility monitoring, and more.

What do you need?

Helical Solution
Patch Solution
External Solution
Custom Solution

AEM Introduces Surface-Mount Fast-Acting Fuses For Low-Power Applications

AEM Introduces Surface-Mount Fast-Acting Fuses for
Low-Power Applications

Fiberglass enforced epoxy chip fuses combine low DCR, high inrush withstand
and fast clearing time; low current ratings and 0603 package ideal for portable electronics

SAN DIEGO, Calif. — Sept 2015— AEM Components introduces its latest series of fast-acting low-power SMD fuses. The new thin-film T0603FF Series, available with current ratings from 0.15A to 5A, combines high inrush capability with very fast clearing at 200% of rated current. The low-profile, 0603 packaged body is constructed with fiberglass enforced epoxy technology combined with nickel and tin-plated copper terminations. The T0603FF Series is ideally suited for battery-powered applications including notebook computers and tablets, cameras, toys, Bluetooth earphones, and other portable electronics devices.

Key Features:
• Ultra low DCR
• Current rating from 0.15A to 5.00A
• Low profile compact footprint (0603 package size) with thickness of as low as 0.3 mm
• Lead-free, Halogen and RoHS Applications:
• Battery-powered applications
• Notebook computer and tablets
• Cameras
• Toys
• Bluetooth earphones
• Portable devices

Go to: to download technical data for the T0603FF Series

For samples pls contact us.

Embedded Antenna Solutions

Helical Antenna Integration
We really like helical antennas, and our Helicore antennas are ideal for custom integration.Unlike many helical antennas, Maxtena’s Helicore Technology allows for easy integration and embedding. We typically use a standard 3-prong connector for embedding purposes, but our helical antennas can be easily customized for integration.

GPS Patch Antenna Integration
We are experts when it comes to integrating GPS patch antennas into any housing.We are pretty familiar with patch antennas, and we know how to get the best integration for the best price point! We’ve got great tips and tricks for your to try, or we can assist directly with your integration.

Custom Connectors
Most of our off-the-shelf products can be tailored to your project! Our off-the shelf antennas are great for many applications, but sometimes SMA connectors don’t cut it. When that happens, just let us know! We are able to customize our products with most standard cables and connectors.

Contact Us

More infos you will find here.


Alliance Memory expanding their line of legacy low-power CMOS SRAMs with a new 8M IC (512K x 16 bit) in the 48-pin 12-mm by 20-mm TSOP-I package. Available from a very limited number of suppliers and recently discontinued by another manufacturer, the AS6C8016-55TIN operates from a single power supply of 2.7 V to 3.6 V and offers a fast access time of 55 ns.

The AS6C8016-55TIN features low power consumption with a typical operating current of 30 mA and standby current of 1.5 µA. The IC provides high reliability and power savings for low-power portable electronics and industrial, telecom, medical, automotive, and networking applications, and is particularly well-suited for battery backup non-volatile memory.

The AS6C8016-55TIN is fabricated using very high-performance, high-reliability CMOS technology, and its standby current is stable within the operating temperature range of – 40 °C to + 85 °C. The RoHS-compliant device offers fully static operation and tri-state output, and it features a data retention voltage of 1.2 V minimum. All inputs and outputs are fully TTL-compatible.

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