A test unit for identifying output signals at test points of a logic circuit on an oscilloscope and being operable in a real time mode or a memory mode. In the real time mode, the oscilloscope is triggered by any selected one of several signals and, at this time, output signals sensed by test probes are displayed on the oscilloscope. In the memory mode, the output signals are written into a memory. In response to the selected one signal, the output signals written into the memory before or after...

Package for an LSI chip having a plurality of contact pads comprising a carrier and a cover. The carrier is formed of a base of an insulating material and has a generally planar area for receiving the chip. A cooling stud is mounted on the base and can be provided with one or more removable cooling fins. The stud is mounted on the base opposite the area for receiving the chip. Spaced leads are carried by the base and have outer extremities which extend beyond the base in a direction away from th...

A method and apparatus are disclosed for controlling the conversion of electrical energy to mechanical energy as well as for controlling the conversion of mechanical energy to electrical energy. In a separately excited electromechanical energy conversion system, total system power losses are minimized by simultaneously controlling the currents flowing in the different windings of the energy conversion device such that these currents are related by an optimizing function. This method and apparatu...

A magnetically resettable emergency shutoff valve (10) is disclosed. A valve member (26) shifts into a seat (28) and blocks flow of a fluid, such as natural gas, through the valve (10) in response to a seismic event of a selected magnitude. Movement of a magnet (32) externally of the valve (10) leads to movement of the ferromagnetic valve member (26) away from the seat (28).

In a fire detection system having at least one fire sensor, a receiver including a power source connected to the fire sensor for supplying a power source voltage to the fire sensor and a receiving relay for receiving a fire detection signal from the fire sensor, and at least one power/signal line for coupling the fire sensor to the receiver, the receiver comprises a timer for producing a clock signal over the time of day and command means for providing predetermined detection sensitivity change ...

A windmill (10) has a member (12) which is torsionally displaceable and coupled to a transducer (62) to produce usable energy.

A method and microorganism are set out for producing a fermentation product which contains ethanol but has a lower than usual fusel oil content. The mutant microorganism is of the genus Saccharomyces or Torulaspora.

A disc package (10) includes a generally circular base (18), a core (34) extending upwardly from the base (18), and a cover (44) having a peripheral skirt (48) extending to a lower rim portion (50). The circular top is fastenable to the upper end portion (38) of the core (34). A resilient gasket (80) is removably attached to the lower rim portion (50) of the peripheral wall (26) and provides pressed resilient slidably sealing contact to prevent entry of dust into the disc package. Structures are...

An electronic control circuit for controlling left and right turn signal lamps including a turn signal circuit to activate the left or right lamp and then automatically deactivate either lamp after a predetermined time period, a hazard signal circuit to flash the left and right lamps simultaneously, a circuit to override the hazard signal circuit to activate the left or right lamp for the predetermined time period and then to reactivate the hazard signal circuit to flash the left and right lamps...

A heating unit (10) transfers energy via vaporized working fluid exclusively. The unit operates at sub-atmospheric pressure and a unique heat transfer apparatus (84) is provided to serve as an energy absorber panel (12) and/or a heat exchange unit (44). Since vaporized working fluid is utilized to transfer energy several hundred times the amount of energy can be transferred per unit weight of working fluid as compared to systems which transfer energy via liquid working fluid. Thus, a minimal amo...