| 摘要 |
<p>The invention relates to the electrical supply for equipment on board a vehicle. An embodiment comprises: - ballast transistors (5) of MOS type, inserted between the on-board network and the equipment to be protected, - a differential amplifier (8) supplied via a start-up supply device (6) and a DC/DC converter (7); - a switching device (10) selecting a setpoint voltage Vc, from three voltages, Va, Vb, Vh, corresponding to three operating regions of the device; - a first reference-voltage generator (11) furnishing the voltage Vh corresponding to the highest voltage in the nominal supply range for the equipment; - a second reference-voltage generator (12) furnishing the voltage Vb corresponding to the lowest value in the nominal supply range for the equipment; - an alignment and shifting device (9) furnishing the voltage Va which is dependent upon a voltage aligned and shifted relative to the troughs of the transients and of the ripples in the input voltage Ve. Application to the protection against transients of electronic apparatus on board aircraft and other vehicles. <IMAGE></p> |
