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Power Factor Correction, Harmonic Currents & EN61000-3-2

You’re designing a piece of electronic equipment and looking at all the safety and EMC legislation you need to comply with. Some areas are relatively straightforward, but then within the EMC directive, you come across EN61000-3-2 which relates to levels of harmonic current your equipment is allowed to draw. We look in detail at what it takes to be compliant.

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Southern Manufacturing & Electronics 2023

Relec Electronics is exhibiting its extensive range of displays and power products at Southern Manufacturing & Electronics 2023 (Farnborough International, Farnborough, 7-9 January).

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The Advantages of AC-DC Brick Power Solutions

When we look at AC-DC power supplies on the market today, the most commonly seen types are open-frame, enclosed fan-cooled, and adapter types (plugtop and desktop). However, there is now a trend towards higher power density solutions, moving away from forced air cooling, which lends itself to the application of brick style power supplies. In this article, we will talk about the concept of AC-DC bricks and look at their advantages when compared to traditional power supplies…

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Three-phase Sine Wave DC-AC Inverter Series

The OVX-6400 dc-ac inverter is engineered to operate over a wide input range and to protect loads at start-up and mid-power modes. The rail-certified products are available from specialist power company, Relec Electronics and are the first designed by Premium to operate straight from the high voltage catenary power line. 

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The EC7AW18-72 10W DC DC Series 8.5 to 160Vdc input range

Relec Electronics and their partners at Cincon are proud to announce the release of the ultra-wide input range EC7AW18-72 10-Watt DC-DC Converter Series. The EC7AW18-72 has an input range of 8.5 – 160V DC in one single range, making it suitable for all common battery voltages from a single 12V battery through to 110V systems.

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CBS-10K Railway compliant DC DC Converter with 10kW peak capability

The CBS-10K is a DC/DC converter providing peak power up to 10kW for up to 40 seconds with a nominal output of 500Vdc (Variations on request). The CBS-10K is specifically designed for hybrid electric/diesel trains to allow them to be installed on both electrified and non-electrified tracks (or a combination of the two).

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CFM Series AC DC Converters with 200% Peak Load Capability

In tandem with the trend for automation in the home, miniaturisation means that these appliances are reducing in size, requiring smaller motors and smaller power supplies to deliver energy efficiently. These devices often need a power supply that can offer higher power levels for short periods of time, such as when the motors first start up.

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AD-1500 Series 1500 Watts of Programmable Digital control

The AD-1500 series ac dc converters offer flexibility & programmability through a series of configurable modules and easy-to-use digital interfaces. The AD-1500 series can be operated in constant voltage (CV) or constant current (CC) modes, with full digital control via RS485, Ethernet, I2C or PmBUS interfaces.

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ACB-3000 adds redundancy for DC/AC inverter systems

The ACB-3000 is a dual-input AC by-pass switch designed for use with DC/AC inverters, which enables redundancy to be added to mission-critical DC/AC inverter based systems.

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Laser-Focused Power Supply Design Advice

Specialist Laser-focused Power Supply Advice is available from Relec Electronics for DC Power requirements for semiconductor lasers. Semiconductor lasers, i.e., diode lasers require a reliable and stable source of dc power.

A small change in “V” can lead to a large change in “I” which affects the quality of the light output.

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Improving the odds with 10:1 Input DC DC Converters

Nearly all electronic products require some form of power conversion product to convert the primary energy supply, be it ac mains, or a dc source such as a battery, to a voltage suitable for the equipment within.  Today’s design engineers have a huge array of products available to choose from, which can be a blessing AND a curse. This article provides advice on when a 10:1 (or greater) input range converter is the optimal choice and when other choices more accurately suit the specification’s needs.

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CBI Series – Smart Thinking for City Security

Smart cities never sleep – their intelligence networks rely on always-on devices which need a continuous power source. Now, an integrated power solution, with diagnosis, back-up internal power sharing and the MODbus communication protocol offers a compact, reliable solution to powering the metropolis of tomorrow. By John Stone, Sales Director, Relec Electronics

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