A method of producing inorganic semiconductor- and phosphor-primary particles, which each comprises forming the particles by reacting at least one kind of precursor solution of the inorganic primary particle in a solvent, of which major component is water of a reacting vessel, under the conditions that the pressure is 0. In this method, P light-emitting units are selected as a target group, wherein each of the P light-emitting units has N different power parameters corresponding to N sub-bands. Thus, multiple links of cable may be used while reducing the chance that the jitter will exceed allowable limits. Energy is removed from the fusion product ions as they spiral past electrodes of an inverse cyclotron converter. The air circulation system ejects a cold air into a refrigerator compartment asymmetrically from right and left side walls to form a vortex thereby enhancing the ability of uniform cooling. Further, an operational amplifier 3101 having a high input impedance is used for the buffer 31.