Feeding system for incandescent lamps by overhead wires of trans

Details Feeding system for incandescent lamps by overhead wires of trans Feeding system for incandescent lamps by overhead wires of trans

1978-09-18

1980-12-16

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

315306, 323 34, H05B 41392, H02J 1100, G05F 144

Patent

active

042400252

ABSTRACT:
A system for energizing incandescent lamps of beacons by means of the capacitive energy extracted from an insulated section of the overhead wire of power transmission lines to which the wire is capacitively coupled. The supply system comprises a device for transforming the AC energy from the overhead wire into an AC current which feeds at least one of the incandescent lamps and a regulation circuit mounted in shunt with the transforming device so as to control the current flow through those lamps. Current regulation is carried out by means of switching circuit having a switching time governed by a control circuit. In addition, the control circuit includes an integrator circuit which actually controls the switching time of the switching circuit and a comparator circuit which ensures the forming of symmetrical waveforms at the input of that switching circuit.

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patent: 3426263 (1969-02-01), Hennigan et al.
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patent: 3939396 (1976-02-01), Larson
patent: 3944909 (1976-03-01), Reymond
Tacx, "Elektrostatische Inductie Als Voedingsbron", Polytechnisch Tijd schrift, vol. 19e, Sep. 16, 1964, pp. 657e-659e.
Gessen et al., "Transformator fur Kapazitive Leistungsentnahme aus Hochspannungsleitungen", Elektrotechnik, vol. 7, No. 6, Jun., 1953, pp. 255-259.

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