Abstract:

This paper introduces a power control device with short-circuit protection function.Compared with traditional electromechanical contactors,its control function is achieved by field effect tube.Without mechanical contact,it does not frequently switch contact points during circuits on and off and has no mechanical failure mode,so it has a very high reliability and safety and it is much superior in performance to the traditional control switch.With the short-circuit protection,better protecting load and the airborne power supply circuit,the control device is more reliable.Experiments and practical applications prove that this design has the advantages of simple hardware circuit design,real-time operation,high reliability and a high level of intelligence,and meets the requirements of airborne electronic equipment.

Key words: field effect tube;short-circuit protection;airborne electronic equipment