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  • Roband: Power Supplies for Defence Applications
    of power supply disciplines ac and or dc inputs single and multi output low and high voltage units as well as ac inverters We supply all platform types avionic fixed wing and rotorcraft missiles torpedoes surface and underwater vessels fixed location and mobile land applications HOME COMPANY HISTORY PRODUCTS FAQ EMPLOYMENT CONTACT US Roband Electronics plc Charlwood Works Charlwood Horley Surrey England RH6 0BU Situated a few minutes from London

    Original URL path: http://www.roband.co.uk/ (2016-04-25)
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  • Roband: Power Supplies for Defence Applications
    applications for both the domestic and world markets From the outset we were committed to offering first class equipment and service this remains true today To this end we are virtually self sufficient throughout and as a matter of philosophy intend to remain so This ensures that we are in the unique position of simultaneously being able to guarantee quality and priority We were established in 1956 and moved to our current Charlwood base in 1963 We have an unparalleled record for quality capability and value In addition to a full custom design facility we have a comprehensive range of standard military units We provide a build to print capability and will undertake design and or support of related equipment In development we have an experienced permanent design team working in modern well equipped laboratories Facilities include EMC measurement thermal cycling and vibration We undertake all our own metalwork including CNC machining wound component design and manufacture electrical assembly and test including full climatic Burn In ESS All encapsulation vital for compact high voltage units is performed on site as well as a full range of other support activities To ensure standards are continually reviewed and maintained all work is

    Original URL path: http://www.roband.co.uk/company-history.cfm (2016-04-25)
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  • Roband: Power Supplies for Defence Applications: Our Products
    Input 12 15V 120W Output RO MIL 2213 28V Input 3 3 5V 20A Output RO MIL 2230 28V Input 5V 5A 15V 12V 0 6A Outputs Our products cover the full range of power supply disciplines switch mode and linear ac and or dc inputs single and multi output low and high voltage ac inverters both single and three phase power ranges from just a few watts to tens of Kwatts standard products custom design build to print support and PDS activities for third party designs Programmes Roband support all platform types avionic fixed wing avionic rotorcraft missiles torpedoes surface ships underwater ships land fixed location land mobile space Performance Our equipment is designed to work reliably in the most hostile environments such as 55 C to 115 C extreme shock and vibration NBC hazards EMC programme specific conditions are catered for appropriate properly derated components ultra small packaging Miscellaneous Whole life support PDS services for our own and third party designs Power distribution considerations are of prime concern The trade off studies in any electronic system when considering between distributed and centralised power supplies requires joint review we have a wealth of experience Build to Print and PDS

    Original URL path: http://www.roband.co.uk/products.cfm (2016-04-25)
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  • Roband: Power Supplies for Defence Applications: Our Products
    that switch mode units are much more efficient than linear units but as output voltages increase linear systems improve substantially in this respect Linear Against Bigger heavier less efficient usually and can only operate successfully over a limited input range without dissipating excess amounts of power In practical sizes it is virtually impossible to maintain full compliance during extended duration transients surges and drop outs Switch Mode For Operate over a very wide input range These units are generally rather smaller and lighter and usually more efficient Maintaining performance during temporary loss of input is a practical proposition Switch Mode Against Like for like these units are more complex and electrically noisier than linear types Q4 Efficiency Click to reveal the Answer click again to close A4 Efficiency as a power supply parameter is often misleading What is of most concern is ensuring that the components within the power supply remain within safe operating limits What the user needs to consider is a the overall power consumption and whether the power supply is adequately cooled and b whether there is a sufficient capacity in the source To achieve maximum efficiency will normally mean running at slower switching frequency and that implies a larger unit and space is invariably at a premium For environmental reasons in recent years there has been a great push for lower power dissipation There are a variety of things we can do to improve performance but in order for us to properly assist it will always be an advantage for the user to advise us of as much detail of their application In this way we can optimise our units Q5 What is the switching frequency of a Roband SMPS Click to reveal the Answer click again to close A5 Like efficiency in Q4 the effect of switching frequency is often misunderstood It is sometimes suggested that just by increasing switching frequency there will inevitably be an attendant reduction in size This is not so Theoretically filter sizes reduce with frequency but at the same time other losses increase and parasitic effects become more significant Another consideration is that like for like design a slower frequency will usually mean a more efficient cooler unit There is a very real trade off between size performance and complexity What frequency to choose is a matter of application We try to operate at the optimum which is often less than the maximum possible When critical e g communication and display systems we will try to avoid particular specified frequencies When appropriate we will synchronise to user clocks Q6 How long will it take to develop a power supply from scratch Click to reveal the Answer click again to close A6 The 64 000 question The answer depends on the complexity of the unit and what type of qualification type approval programme is required Component lead time has an effect Typically for a complex multi rail design it is unlikely that a good quality A model will be available in

    Original URL path: http://www.roband.co.uk/faq.cfm (2016-04-25)
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  • Roband: Employment Opportunities
    are an independent British company virtually self sufficient in all disciplines We have been in existence and at the forefront of power supply design development and manufacture since 1956 Would you like to be part of our team working on customer funded and or in house development programmes Roband are continuing to recruit design engineers with hands on experience First class salaries are offered to the successful candidates If you

    Original URL path: http://www.roband.co.uk/employment.cfm (2016-04-25)
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  • Roband: Contact Roband
    roband co uk Contacting ROBAND Situated a few minutes from London Gatwick airport we are located at Roband Electronics PLC Charlwood Works Charlwood Surrey RH6 0BU England Contact form must be completed Name Email address Company Tel Your Enquiry How to find us By Air London Gatwick Airport By Rail London Gatwick Airport Station By Road See map Opening Times Monday to Thursday 0800 to 1645 Friday 0800 to 1535

    Original URL path: http://www.roband.co.uk/contact-us.cfm (2016-04-25)
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  • Roband: Contact Map
    Situated a few minutes from London Gatwick airport T 44 01293 843000 F 44 01293 843001 E postmaster roband co uk Contacting ROBAND Click on the map below to link to Google Maps for more detailed route directions Roband Electronics

    Original URL path: http://www.roband.co.uk/contact_map.cfm (2016-04-25)
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