摘要:
A flasher bulb including a thermal shorting element that alternately shorts and opens only a portion of the bulb filament, thus causing the flasher bulb to produce an alternating high-low illumination. The thermal element is activated by current passing through the element, rather than by heat from the filament. The amount of brightness differential between the “high” and “low” illumination of the flasher bulb is determined by the amount of bulb filament that is shorted out when the thermal element inside the bulb is in the closed position. When a plurality of such flasher bulbs are placed in the sockets of a series-wired light string, they cause the light string to exhibit a random high-low twinkle.
摘要:
An incandescent lamp with a low voltage burner (BM) and integrated voltage conversion means (VCM) having switching elements (Q1, Q2) driven by a separate control circuit (CC) comprising an integrated circuit (IC). The voltage conversion means are suitable for operation at a high temperature and causes only limited amounts of EMI.
摘要:
An electric lamp is provided having an outer envelope or jacket with a lamp base attached thereto, the lamp base having an aperture extending therethrough. A sealed inner capsule is supported within the outer envelope and electrically connected to the lamp base and to an electrically conductive elongated member one end of which engages an inner wall of the outer envelope and an opposite end of which extends through the aperture in the lamp base. A spring is provided which urges the one end of the elongated member against the inner wall and which will urge the opposite end of the elongated member out of the aperture if the envelope is broken thereby disconnecting voltage to a lead of the inner capsule.
摘要:
An electric incandescent lamp has a resistor in series with the lamp filament in order to limit inrush current to the filament. After a short period of lamp operation, a bimetallic switch shorts out the resistor.
摘要:
An electric incandescent lamp has a refractory metal wire coil in series with the lamp filament in order to limit inrush current to the filament. After a short period of lamp operation, a bimetallic switch shorts out the wire coil.