Input current responsive, tap changing transformer system

Details Input current responsive, tap changing transformer system Input current responsive, tap changing transformer system

1992-10-14

1994-02-22

Beha, Jr., William H.

Electricity: power supply or regulation systems

Input level responsive

Using a transformer or inductor as the final control device

315279, 323343, G05F 504

Patent

active

052891100

ABSTRACT:
A system for providing a constant current to airport or airfield signs is disclosed. The system receives input currents of varying amperages which also supply, and allow dimming of, runway or taxiway lights. According to various exemplary embodiments of the present invention, a high power factor is achieved which provides greater cost efficient operation of the signs.

REFERENCES:
patent: 3743921 (1973-07-01), Legg et al.

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