Rotary Switch Application Demo by Rutronik at electronica

Hong Kong, China, November 29, 2018 /Isentia Wire/ - One base platform, many areas of application: Rutronik’s contactless and wear-free rotary switch solution is not only robust, it also cuts development costs and reduces time to market. Adapting the solution to a particular application only requires modifying the software; no changes to the hardware are necessary if the mechanical design is suitable. A demo developed by field application engineers and product managers from Rutronik will be shown at electronica at the Rutronik24 booth.

“We had the idea for a rotary switch solution back in 2017: we wanted to collaborate across departments to develop an application that is used in all machines and devices – like a power switch, for example. The objective was to find a practical and cost-effective replacement for mechanical switches. This is because the lower a mechanical switch’s protection class, the fewer switching cycles it offers and the shorter its service life. With Rutronik’s concept, these criteria are no longer relevant and, thanks to contactless solutions, are less susceptible to failure in all applications where contamination and vibrations are common,” explains Thomas Kepcija, Product Manager Sensor Technology at Rutronik.

The new application consists of a diametrically magnetized disk magnet and a 3-D hall sensor arranged like an on-axis application. The sensor emits two signals that are shifted by 90 degrees and approximately correspond to a sine and a cosine wave. The angle by which the magnet was rotated is calculated by the arctan2[By/Bx] in the microcontroller, which receives the signals either in digital (SPI/I2C) or in analog form from the sensors. In this demo, the microcontroller converts the angle value into a PWM signal and a gate driver and MOSFETs regulate the power of a hot plate. All of the components used in the demo are from Rutronik’s product range. “The fact that we were able to develop this solution in-house shows that our strategy of offering a 360-degree product mix of all the components required for a project is the right one,” says Markus Balke, Senior Marketing Manager Analog Sensors, with conviction.

The hot plate, which can be seen in the demo of the rotary switch solution at electronica, represents just one of many possible fields of application. The concept developed by Rutronik is suitable for a wide range of applications including white goods (washing machines, dryers, microwaves), home appliances (ovens, vacuum cleaners, irons), power tools, medical equipment, automotive applications, transport equipment, and industrial machines. Rutronik used sensors from Infineon, Melexis, and TDK, a power supply from Recom, connectors from Amphenol and MPE Garry, MOSFETs and RFID components from ST, antennas from Molex, and at the heart of the application is the RUT2Cloud board with a Renesas Synergy controller and a GSM module from Telit, which also makes it possible to connect the solution to the cloud. Thanks to Rutronik’s platform-based approach, the base concept can be adapted to various projects simply by modifying the software.

This is the main advantage of the solution: the base platform can be used in numerous fields of application – you only need to modify the software. This cuts development costs, results in significant savings due to easy implementation, and, as a result, considerably shortens the time to market thanks to preselecting suitable components. This makes the solution particularly appealing to customers’ project managers, because cost savings are not achieved by comparing component A to component B but due to the reduced amount of storage space required, fewer part numbers, and higher volumes. On top of that, the ability to deploy new features through the cloud connection adds real value. The solution’s wear-free operation due to the absence of mechanical switches also increases product quality, making it suitable for use in harsh environments.

About Rutronik (www.rutronik.com)
Rutronik Elektronische Bauelemente GmbH is the third largest distributor in Europe (European Distribution Report 2017) and the number eleven worldwide (SourceToday, May 2018). The broadline distributor supplies semiconductors, passive and electromechanical components as well as boards, storage, displays wireless products. The company's primary target markets are the automotive, medical, industrial, home appliance, energy and lighting industries. The ranges RUTRONIK EMBEDDED, RUTRONIK SMART, RUTRONIK POWER and RUTRONIK AUTOMOTIVE provide customers with specific products and services in groups tailored to the respective applications. Expert technical support for product development and design-in, individual logistics and supply chain management solutions as well as comprehensive services complete its scope of performance.

The company, founded by Helmut Rudel in 1973 in Ispringen, Germany, now has over 70 subsidiaries in Europe, Asia and the Americas. Rutronik employs more than 1,600 staff worldwide and achieved Group sales of 950 million euros in the fiscal year 2017.

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Press contact:
Rutronik Elektronische Bauelemente GmbH: Sebastian H#246;r, Public Relations, Tel: +49 7231 801-1679;
E-mail: sebastian.hoer@rutronik.com

Techworks Asia Ltd: Claire Walker / Karrie Lee
Tel: +852 2525 8038 / 2525 3980
Email: claire@techworksasia.com / karrie@techworksasia.com