A gas regulator has a pressure control diaphragm biased by a spring. The force of the spring upon the diaphragm, and thus the operating pressure for the regulator, is controlled by a linear travel bushing bearing against the spring. The bushing is preferably threaded upon a shaft, the rotation of which allows travel of the bushing. The top end of the shaft is recessed within a bore in the regulator housing to deter tampering. The shaft may be locked in position by use of a recessed setscrew, whi...

A regulator for pneumatic system comprising a connecting bracket for connecting other air conditioning units to a regulator body. Because of this connecting bracket, the air conditioning units to be connected to each other can be modularized. The connecting bracket has, at its both ends, a pair of projection-like pawl sections which are engageable respectively with engaging sections formed respectively on outer peripheral surfaces of the other air conditioning units. Incorporated in the connecti...

A regulator is provided with circtuiry for restraining a variation in a frequency band and to provide a transient response characteristic which does not depend upon load current. A load current detecting transistor is connected in parallel with an output driver transistor of the regulator to detect load current. The ON resistance of a transistor of a phase compensation RC network is varied in accordance with current variations detected by the load current detecting transistor. As a result, a fre...

A regulator for adjusting the pressure of a pressurized fluid wherein when a valve seat is fitted with a seat holder in a compressed state wherein excessive deformation of the valve seat due to a compressing reaction force is eliminated by the provision of a recessed groove is formed in the outer periphery of the valve seat. A compressing force by the seat holder is absorbed by compression deformation of the valve seat in the recessed groove portion of the valve seat.

The opening and closing operations of a poppet valve are stabilized by preventing a diaphragm and the poppet valve from being inclined so that the pressure adjusting accuracy of a regulator is increased. For that purpose, the diaphragm is fitted with a piston and the poppet valve for opening and closing a valve seat and the piston is guided for moving in the axial direction with a sleeve by slidably inserting the piston into the sleeve.

A pressure regulator has a first and a second chamber which are separated by a movable piston varying the size of the chambers and which are in fluid contact with one another through a channel extending in the movable piston. The piston has a greater pressure surface area in the first chamber than in the second chamber. A high-pressure chamber beneath the bottom of the second chamber, has an aperture disposed in the bottom of the second chamber. A valve seat is disposed in the second chamber and...

A back pressure chamber is defined at an end of a rod for acting in a direction to cancel out a pressure applied to a valve head, and an aspirator chamber is defined closely to the valve head for developing a pressure lower than a secondary pressure due to a suction caused by a nozzle. The rod has a first communication hole and a second communication hole that are defined therein which provides fluid communication between the back pressure chamber and the aspirator chamber.

A regulator includes a digital voltage detection unit for generating a digital voltage detection signal by detecting a digital value of a voltage level of an input voltage; a variable gain amplifying unit for amplifying the input voltage in an amplifying ratio according to a gain control signal; and a gain control unit for receiving the digital voltage detection signal to thereby generate the gain control signal.

A voltage regulator with a very low drop-out voltage. The regulator utilizes an inversely biased metal-oxid semiconductor field effect transistor as a regulating element. The field effect transistor is linearly controlled by an error amplifier which compares the regulated output with a reference voltage. The field effect transistor creates a voltage drop between the input and the regulated output by a diode function within the field effect transistor. The field effect transistor bypasses this di...

The invention provides regulator polypeptides and DNA (RNA) encoding regulator polypeptides and methods for producing such polypeptides by recombinant techniques. Also provided are methods for utilizing regulator polypeptides to screen for antibacterial compounds.