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Two new exciting developments from Relec Electronics

14 December 2018

Relec Electronics announce the development of railway convertors with pluggable connectors and non-isolated buck converters.

RCM Series railway converters with pluggable connectors

Relec Electronics are pleased to announce that Melcher have now released the pluggable connector versions of their flagship railway converters, the RCM series.

The RCM series has been developed by the same Swiss team that designed the now ubiquitous M, S, K, Q and P series products used extensively across Europe’s railways for applications as diverse as safety interlocks, train radios, lighting and even soap dispensers.

All Melcher products are designed to the following strict criteria:

• Compliance to EN50121-3-2:2016 and EN50155:2017 as standard

• Severe derating down to component levels

• Over stressing on input to output isolation tests

• HALT (highly accelerated life testing) as standard

• All circuits dip-varnished for high mechanical durability and humidity withstand

• Self-cooling, no derating over the specified temperature range

Pluggable connectors are especially suitable for railway applications providing additional retention capacity for shock and vibration-proof operation ideal for many rolling stock applications such as cab radios, HVAC systems, train control, passenger information systems, washroom systems and illumination application.

K78 series POLs – now with reduced prices

Mornsun continues to go from strength to strength with their R3 series dc dc converters. Over the past 12 months they have invested heavily in developing their own control ICs which not only address many of the short comings of traditional low-cost components (short circuit protection, large capacitive loads, over temperature protection and low load efficiency), but also managed to significantly reduce the prices of many series, whilst still maintaining a lead-time of 4 weeks.

The K78 series of non-isolated buck converters rated at 0.5, 1.0 and 2.0A are great examples of the results of this development work. The K78 series has industry standard pinning and is also compatible with TO-220 packaged linear regulators, but with efficiencies up to 95 percent and does not require external heatsinks.

The K78L05-500R3 is now available for £0.70 (1,000 off piece price), with samples available from stock. Units are operationally rated from -40 to + 85° and offer complete short circuit protection.

As well as through hole devices, surface mount devices are also available.

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