For ADB SAFEGATE – a global player in the market for airport services – Mersen designed a custom solution that is used in a component for visual airfield guidance: The so-called SCF (series circuit filter) makes it possible for proprietary PLC signals to pass the constant current regulator (CCR) for airfield lighting systems. Up until that time ADB SAFEGATE had used an oil-paper capacitor in the application. Unfortunately, the dependability of this product leaves a great deal to be desired.