Abstract: A faceplate assembly for a color cathode ray tube includes a glass faceplate having on its inner surface a centrally disposed phosphor screen. A foil shadow mask is mounted in tension on a mask support structure located on opposed sides of the screen and secured to the inner surface. The mask support structure has a metal cap for receiving and mounting the shadow mask in tension. The mask support structure according to the invention includes at least two adhered layers of ceramic having different coefficients of thermal expansion effective to match the different coefficients of thermal expansion of the metal of said cap and the glass of said faceplate.

Abstract: A coaxial cable isolator includes ceramic capacitive and inductive elements for isolating the cable sheath from low frequency power current while passing high frequency television signal current. A ceramic resistance ring is positioned inside the isolator and forms a gap with the inner conductor thereof for precluding rapid buildup of voltage across the interruption in the isolator by discharging high energy currents thereacross. The ceramic material has about 15,000 ohms resistance for precluding power follow-through current after occurrence of a high energy discharge.

Abstract: A coaxial cable isolator includes a stepped diameter tubular outer conductive element and a threaded smaller diameter inner conductive element coaxially aligned therewith to form an interruption. A ceramic structure is positioned in the interruption and includes three ceramic capacitive elements, each having a different temperature coefficient selected to provide a minimum of 3.8 and maximum of 5.0 nanofarads of capacitance over the 0 degree Centigrade to +45 degree Centigrade operating temperature range of the isolator. Two ferrite elements for EMI absorption are sandwiched between the three capacitive elements.

Abstract: A bleeder resistor is described for draining charge from capacitances formed in a three element isolator. The isolator includes a dielectric element having conductive coatings thereon to form a capacitance. A bleeder resistor is formed on the dielectric element by screening a thick film resistive composition on the dielectric element so as to create a discharge path between conductive coatings on the dielectric element.

Abstract: An isolating connector is disclosed for isolating the center conductor of a shielded cable from DC and low frequency AC potentials. The connector includes a generally tubular shell which is connected to the cable's shield and within which a connector pin is located for coupling to a female plug. A capacitance inside the shell is connected in series with the pin and the cable's inner conductor. Also inside the shell are two bleeder resistances, one connected in parallel with the capacitance and another connected in series between the shell and the connector pin. With this arrangement, any DC or low frequency AC potential appearing on the cable's inner conductor is isolated from the connector pin, and a discharge path is provided for the capacitance in the shell and any capacitance serially coupled with the cable's shield.

Abstract: A method of fabricating a lead titanate piezoelectric surface acoustic wave substrate comprises combining lead oxide, titanium tetra-n-butoxide, lanthanum oxide, and manganese dioxide, with a hydrocarbon solvent and adding water to the combination to form a slurry in which titanium polyester is precipitated unto the lead oxide and lanthanum and manganese oxides. The slurry is dried by heating to a temperature sufficient to remove the liquids therefrom but below the temperature at which an exothermic reaction between the included hydrogen, oxygen and carbon occurs. A first calcining operation produces the exothermic reaction and forms lead titanate after which the lead titanate is heated to and maintained at a temperature above that produced by the exothermic reaction. The lead titanate is then ground to produce powdered lead titanate and a second calcining is carried out to produce structural annealing of the powdered lead titantate.