PURPOSE: To provide an electronic control type pressure regulator which regulates the pressure of a fluid contained in a pressure accumulating chamber between a higher pressure value given from a prescribed pressure source and the lower pressure value corresponding to a discharge pressure. ;CONSTITUTION: An electronic control type air pressure regulator is provided with a relay container 4 communicated with a pressure accumulating chamber 5 through a first solenoid valve 3, a second solenoid valve 1 which makes the container 4 to be communicated with a pressure source, a third solenoid valve 3 which makes the container 4 to be communicated with the atmosphere, and a pressure sensor 6 which is positioned on the downstream side of the valve 3 and connected to the electronic control system of each solenoid value so as to measure the pressure of a fluid in the chamber 5.;COPYRIGHT: (C)1994,JPO
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