Abstract:
A diode switched line length phase shift network utilizing alternately directed diodes to reduce the number of DC biasing paths required to selectively switch the line length in various combinations into the circuit and the utilization of the low capacitance and high dynamic collector resistance of a transistor to apply a DC bias to the switching diodes of the phase shift circuit.
Abstract:
An improved solid-state fluorescent lamp ballast in which line voltage or directly rectified line voltage is chopped to provide a high frequency input to the lamp permitting smaller reactive ballast components to be used. Also shown are various means of switching, means for isolating the high voltage switches for the logic circuits, driving them and various load circuits.
Abstract:
A method for fabricating an integrated circuit array supporting substrate having coaxial transmission lines formed about a core means in proper position for electrically connecting integrated circuit chips. After determining the position and function of the integrated chips mounted upon the core means, the substrate is fabricated by properly positioning insulated conductors in a frame designed to retain the conductors in a desired arrangement, folding the frame about the core, plating the insulated conductors, core and frame with metallized layers to form coaxial cables of the insulated conductors, encapsulating the device, and exposing the ends of the coaxial lines.