Abstract: A variable-effect lighting system includes a lamp assembly and a lamp controller coupled to the lamp assembly. The lamp assembly comprises a number of multi-colored lamps in series with an AC voltage source and in series with each other. Each multi-colored lamp comprises a first illuminating element for producing a first color of light, and a second illuminating element for producing a second color of light. The lamp controller is configured to control the current draw of each said illuminating element, and to adjust the current draw in accordance with the frequency of the voltage source.

Abstract: A variable-effect lighting system includes a lamp assembly and a lamp controller coupled to the lamp assembly. The lamp assembly comprises a number of multi-coloured lamps in series with an AC voltage source and in series with each other. Each multi-coloured lamp comprises a first illuminating element for producing a first colour of light, and a second illuminating element for producing a second colour of light. The lamp controller is configured to control the current draw of each said illuminating element, and to adjust the current draw in accordance with the frequency of the voltage source.

Abstract: A variable-effect lighting system includes a lamp assembly and a lamp controller coupled to the lamp assembly. The lamp assembly comprises a number of multi-coloured lamps in series with an AC voltage source and in series with each other. Each multi-coloured lamp comprises a first illuminating element for producing a first colour of light, and a second illuminating element for producing a second colour of light. The lamp controller is configured to vary the colour produced by the lamps by varying the conduction interval of each illuminating element according to a predetermined pattern. The controller is also configured to terminate the variation upon activation of a user-operable input to the controller.

Abstract: A variable-effect lighting system includes a lamp assembly and a lamp controller coupled to the lamp assembly. The lamp assembly comprises a number of multi-coloured lamps in series with an AC voltage source and in series with each other. Each multi-coloured lamp comprises a first illuminating element for producing a first colour of light, and a second illuminating element for producing a second colour of light. The lamp controller is configured to vary the colour produced by the lamps by varying the conduction interval of each illuminating element according to a predetermined pattern. The controller is also configured to terminate the variation upon activation of a user-operable input to the controller.

Abstract: A variable-effect lighting system includes a lamp assembly, and a programmable lamp controller. The lamp assembly comprises a string of bicolored lamps, each bicolored lamp including a first illuminating element for producing a first color of light, and a second illuminating element for producing a second color of light. The programmable lamp controller is coupled to the lamp assembly for setting the conduction angle of the illuminating elements according to at least one predetermined pattern stored in a memory of the lamp controller. Preferably, the controller includes a user-operable input to allow the user to select the predetermined pattern and hence the color display as desired.

Abstract: The invention relates to a transition between a "stripline" and a "microstrip" transmission line which uses printed circuit board materials and processes. The transition, which includes a stripline region and a microstrip region, also includes a transitional region in which a quasi coaxial line section is provided in the stripline region near the termination of the upper ground plane. A double tapered double slot line is used to avoid discontinuity. The two slots taper to minimum width at the termination of the upper ground plane, and widen in the transition to the microstrip region. The transition is of wideband operation (e.g. from near DC to 20 gHz) and of high performance.