Process for the production of an improved reducing gas comprising essentially H.sub.2 +CO and having a minimum "reducing ratio" (H.sub.2 +CO)/(H.sub.2 O+CO.sub.2) of 15. The reducing gas is generated in a separate unpacked noncatalytic reaction zone by the partial oxidation of a liquid hydrocarbonaceous fuel, substantially in the absence of supplemental H.sub.2 O. The temperature in the reaction zone is moderated by a gas mixture having a "reducing ratio" greater than about 1, for example: a por...

A microelectric wafer or chip vacuum chuck in the form of a heat exchanger pedestal with a heat exchanger pressure vessel at the pedestal top through which hot and cold fluids are selectively pumped in circulation from and return to, respectively, hot and cold remote fluid reservoirs. A plurality of small diameter vacuum tubes pierce the heat exchanger pressure vessel and are brazed at each end to upper and lower plates with the top of the upper plate being the chuck surface with the vacuum tube...

A method for testing the interconnector network on insulative substrates on which integrated circuit chips are to be mounted. The method involves testing for the operability of said interconnector network prior to the mounting of the chips by temporarily mounting at the chip sites a plurality of test chips. Each of these test chips contains a plurality of diodes which respectively connect the chip terminals to a common terminal. The chip terminals are connected to the interconnector network and ...

Apparatus and method are provided for diagnostically testing electrical systems, such as printed circuit boards and integrated circuits. In testing electrical systems having a plurality of input terminals a test signal is applied to each input terminal and a comparison is made to verify whether or not any signal actually present on each input terminal corresponds with the applied test signal. In testing electrical systems having an output terminal which would normally provide a pulse signal in r...

The circuitry of modules is checked by the use of a switching device which electively connects all possible combinations of pairs of terminals of a selected module to a sensing circuit. The sensing circuit enables a selective SCR when there is continuity between the selective pairs of terminals. The enabled SCRs cause a further switching system to be programed in a binary fashion whereby the switching system will power an indicator to visually show all the connections in the module.

Apparatus for testing circuit packages including a test sequence generator which is connected to a contactor for making contact to the leads of a circuit package. The contactor includes an inclined track for slidably receiving integrated circuit packages, and circuit package storage tubes connected to the ends of the inclined track. The contactor has a test region at which a circuit package is held by a rocker member. Contact means having a plurality of fingers is operated to make contact with t...

A system for checking boards bearing integrated circuits, wherein a program card is read automatically to provide both test input signals to the board and simulation output signals representative of the correct output signals which should be delivered by the board in response to the test input signals, and wherein the actual output signals delivered by the board are compared with the simulation output signals for generating indicia representing any defects which may exist in the board.

A circuit for comparing a known electronic circuit card with an unknown card of similar type wherein clock pulses are delivered to a multistage binary counter which delivers its output identically to the inputs of the known card and to the corresponding inputs of the unknown card. The corresponding inputs and outputs of the known card and unknown card are compared with each other by a plurality of exclusive OR-gates which generate an error signal in the event of any disagreement between the two ...

A portable, isolation-guarding measuring instrument that may be easily carried by electronic technicians, television service repairmen, etc. The instrument comprises a suitable meter movement of the voltmeter-type for providing an indication of the magnitude of an electrical signal and having first and second input measurement terminal leads for coupling the opposite terminals of an in-circuit component to be measured to the meter movement and to an excitation signal. A third isolation-guarding ...

Connection circuitry provides for TAP and internal scan test ports to be merged so they both can co-exist and operate from the same set of IC pins and/or core leads or terminals. This arrangement provides for the merged TAP and scan test port interfaces to be selected individually or in groups. Internal Tap Lock circuitry uses only the existing 1149.1 interface signals to produce a Lock Out signal to enable and disable a TMS/CS signal to the TAP circuitry.