Abstract: An apparatus for monitoring or controlling the temperature profile of a kiln or furnace is provided by utilizing a thermocouple array that generates an emf that is indicative of the temperature differential between a monitoring point or points and a chosen reference point in the furnace. The thermocouple array is structured so that an absolute temperature indication is provided at the chosen reference point and the other monitoring points are shown to be either higher or lower than the reference. The thermocouple array may be made in a wire and bead arrangement, or by thick film printing techniques. The EMF output of the array is multiplexed and applied to a CRT-type display wherein the degree of difference (either positive or negative) between each monitoring point and a reference is readily observed and can be easily compensated.

Abstract: Powder compositions useful for making conductors, e.g. microcircuit conductors, end terminations for capacitors, electrodes for gas discharge display devices, etc. The compositions comprise inorganic powders dispersed in an inert vehicle and are printed and fired in the conventional manner on dielectric substrates. The inorganic powders comprise aluminum, silicon, and glass.

Abstract: The invention provides an array of spaced thermocouples inserted into the kiln as a unit to provide the temperature profile of the kiln on a continuous basis. The output signals from the thermocouples are multiplexed and displayed on a CRT device. A horizontal line across the face of the CRT screen provides a temperature reference for the profile when a digital thermometer is driven with the horizontal line generating voltage. To reproduce a desired temperature profile, the invention provides a temperature profile synthesizer comprising a resistor-ladder network and a voltage source for simulating the small voltages developed by the temperature monitoring thermocouples in the array. By displaying the synthesized temperature profile on the CRT at the same time that the actual measured temperature profile is being displayed, the kiln can be more easily controlled to provide the desired synthesized profile.

Abstract: Powder compositions useful for making conductors, e.g. microcircuit conductors, end terminations for capacitors, electrodes for gas discharge display devices, etc. The compositions comprise inorganic powders dispersed in an inert vehicle and are printed and fired in the conventional manner on dielectric substrates. The inorganic powders comprise aluminum, silicon, and glass.

Abstract: Disclosed herein are powder compositions useful for making conductors, e.g., microcircuit conductors, end terminations for capacitors, electrodes for gas discharge display devices, etc. The compositions comprise inorganic powders dispersed in an inert vehicle and are printed and fired in the conventional manner on dielectric substrates. The inorganic powders comprise a mixture of nickel and/or aluminum or copper and boron. Glass powder and/or silicon powder may also be present.

Abstract: A thermistor material which, when screened and fired upon ceramic substrates by thick film techniques, exhibits a substantially constant temperature coefficient of electrical resistance. The thermistor composition or ink, before screening, comprises from 30 to 80% by weight of an oxide of vanadium VO.sub.X, where X varies from 1.5 to 2.5, mixed with 70 to 20% by weight of a glass frit.