Abstract: A solid state clock for an automobile or the like, which includes display means in the form of a vacuum fluorescent display. Current is supplied from the automobile battery to the display through an integrated circuit or "chip". The voltage from the battery is doubled by an inductor coil coupled between the battery and the integrated circuit. An electrical switching means in the form of a transistor is coupled between the integrated circuit and the inductor coil for supplying converted frequency thereto. A second switching transistor and a Zener diode is provided to regulate the duty cycle of the first transistor to maintain the voltage to the display substantially constant.

Abstract: A method of assembling a pressure sensor is disclosed. The sensor includes an aneroid capsule and an electrical circuit secured to opposite sides of a first insulator. The capsule and circuit are electrically interconnected. Second and third insulators are assembled on opposite sides of the first insulator bearing against respective ones of the aneroid capsule and the electronic sensing circuit. The subassembly so formed then is partially inserted into the open end of a hollow can having a closed opposite end with a port therein. A vacuum is applied to the port to suck the subassembly into the hollow can.