ABSTRACT

the volume of 1000 cubic millimeters. The booster amplifier consisted of a pilot nozzle-flapper type valve followed by a main nozzleflapper type valve as shown in Figure 2. The diameters of the nozzles of the pilot and of the main valves were 1.0mm and 1.0mm, respectively and that of the membranes of them were 35mm and 30mm, respectively.