ES34612U - Thermal primer for tube enclosure (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

THERMAL PRIMER FOR IGNITION OF FLUORESCENT TUBES, which is characterized by the two pins of the termination terminated by means of two bimetallic ribbons in the respective contacts, one of which is graphite and metallic the other, so that the electrical resistance between they, by the circulating current, produce the abrupt warming of the bimetal tape to which the metallic contact is attached, since it is curved over a graphite resistance and causes the break of the contact and, with it, an overvoltage in the general circuit that produces the arc in the fluorescent tube and, consequently, a voltage drop in the reactance, so that, when the bimetallic strip takes the rupture position, the reduced working voltage is applied to the ends of a graphite resistor, connected between the lugs of the primer, causing the heat in the produced one to maintain the bimetallic tape in its position, or if, for a brief interruption of the the network, the tube is turned off, when the tension is restored it will be applied completely to the resistance, which will determine that the excess of heat produced thereby accentuate the curvature of the bimetal tape and establish a circuit between the metallic contact and a third metallic contact attached to the carbon, which will heat the tube and cool the tape until it returns to its normal working position. (Machine-translation by Google Translate, not legally binding)