A rectifier-capacitor power supply has source terminals across which is connected the series combination of a voltage dropping resistor and a transistor circuit comprising (a) an NPN resistor connected in a common emitter configuration and having its collector connected by a load resistor to the voltage dropping resistor, and (b) a PNP transistor connected in a common collector configuration across the series combination of the NPN transistor and its load transistor. A pair of output terminals f...

A voltage detection circuit detects a regulator output voltage. A current detection circuit detects a regulator output current. A first amplifier circuit generates a voltage error signal in response to a command output voltage level indicative of a target value of the regulator output voltage, and in response to the detected regulator output voltage. A second amplifier circuit generates a current limiting signal in response to a command limit current level indicative of a limit value of the regu...

The present invention provides a pressure regulator comprising a housing including a high pressure chamber and a low pressure chamber, a moveable pressure boundary member configured to isolate the high pressure chamber from the low pressure chamber, a pintle valve, including a pintle stem and a pintle retainer, the pintle stem extending through the moveable pressure boundary member and carrying the pintle retainer, the pintle retainer being disposed in the low pressure chamber, and a resilient m...

A switching regulator includes an input power supply connected to an input of the switching regulator; at least one input/output disconnection switch disposed between the input power supply and a device connected to an output of the switching regulator, for interrupting the supply of an energy to the device from the input power supply; and a device for limiting a rush current that flows into an output capacitor from the input power supply when the input/output disconnection switch turns on to st...

A pressure regulator for use in regulating the outlet pressure of a pump for use in an engine comprises a piston member which is moveable with respect to an outlet opening under the influence of fluid pressure acting on the piston member to control the degree by which the outlet opening is obscured. The pressure regulator comprises a biasing arrangement for applying a biasing force to the piston member which opposes the pressure of fluid acting on the piston member. The biasing arrangement compr...

A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chamber. Increased pressure in the chamber decreases the flow into the chamber and decreasing pressure increases flow whereby fluid flow out from the chamber is maintained at a desired pressure. The outlet ...

To provide a regulator circuit capable of preventing oscillation of output voltage when an overcurrent regulating function is activated voltage across resistor 31 is lower than the voltage of voltage source VR2, output of hysteresis comparator 51 is low-level, n-type MOS transistor 63 is turned off, and capacitor 62 is charged to the voltage level of power supply line Vcc under the normal condition. On the other hand, under an overcurrent condition, hysteresis comparator 51 becomes high-level, n...

A flow regulator (1) having a regulator housing (2) with a control peg (4) in a passage channel that encompasses an annular flow restrictor (5) made of elastic material. The flow restrictor defines a control gap (6) located between itself and at least one part that is fixed to the housing. The passage cross-section of the gap can be modified by deformation of the flow restrictor resulting from the difference in pressure during cross flow. Spaced recesses (7, 8) oriented in the flow direction are...

The invention relates to a variable flow regulator adopted to provide accurate flow rates at low flow and ultra low flow rates. The regulator comprises a wide-range flow regulator for low fluids flow, comprising a housing divided into a first and second chambers by means of an elastic diaphragm. The chamber is provided with a fluid inlet and an outlet connected to a labyrinth path.

The precision regulator connects to a high pressure fluid source and regulates the pressure to a downstream apparatus. If an overpressure occurs, it can be vented to atmosphere. An elongate control stem engages a supply seal assembly and a vent seal assembly and moves axially and past these seal assemblies to achieve regulation and venting. The set point of the regulator can be adjusted by rotation of an adjustment knob that adjusts the position of the elongate control stem relative to the suppl...