Other research and development work ( etc.) – prof. dr. ing. Dorin Petreus
- High efficiency resonant supply for automaton systems (PBF – Holland)
- Power supply for medical printer (for Codonics USA);
- Power supply with electronic ballast for voting machines (for Nedap Power Supllies Holland);
- High voltage power supply for copying machines (for dutch Oce);
- Power supply for projectors (for Philips);
- Sinusoidal inverter 12-230V 800VA (dutch Mastervolt);
- Sinusoidal inverter 24Vcc-230Vca 800VA (dutch Mastervolt);
- Tourqe measurement system (Seohowintech South Coreea).
- High efficiency quasiresonant flyback converter (dutch PBF)
- Very high efficiency power supply for agriculture applications(Nedap)