Ringing choke

The next question is, is the efficiency being lost in the switch If so, there could be many reasons for that. A switch could be lossy simply because its drive is inadequate. Early self-oscillating converters (ringing choke oscillators) were extremely lossy because the drive would slowly droop to the point where it just couldn t sustain itself and then the switch would turn OFF. Modern self-oscillating converters have improved tremendously on this, and you can even find full-fledged multi-output PC power supplies that don t have a single... 

Choke Ring. Metal ring used in the reaction chambers of certain recoilless weapons to control the escape of chamber gases Ref Glossary of Ord(1959), 69... 

Fig. 14.23 Typical blow molding die A, choke adjusting nut B, mandrel adjustment C, feed throat D, choke screw E, die head F, plastic melt G, die barrel H, heater band /, choke ring J, centering screw K, clamp ring L, die heater M, die N, mandrel. [Reprinted by permission from J. D. Frankland, A High Speed Blow Molding Process, Trans. Soc. Rheol., 19, 371 (1975).]...

On the top of the chamber there is a cylindrical extension C which is cooled in order to effect condensation of mercury vapour. Six iron anodes A (there may be twelve or even eighteen of them) are suspended from ring R which covers the top of the chamber. Current for the rectifier is supplied by a three-phase transformer the secondary windings of which have their middles connected in a neutral point in this way the secondary windings have six ends connected to six anodes A by choking coils D in series. 

The biggest plus I found for the ringed load was that they shoot much flatter than the riHed slug. The greatest difference occured when both types of projectiles were fired through full choked barrels of standard 28" length. 

Fig. 1 also shows that the emitter and the collector are connected by several units. To reduce the heat conduction loss, Ta tubes called heat-chokes are joined to the both electrodes. Ceramic seal rings are used to insulate the electrodes electrically. Two rings are arranged for Cs vapor tube inlet and electrical leads. Each unit is connected by a electron beam welding or a vacuum brazing method. 

Nevertheless, machines with concave die rings and internal press rollers do have advantages. For example, if the feed material exhibits a certain elastic behavior, because the forces in the relatively long and slender nip increase slowly, a more complete conversion of temporary elastic into permanent plastic deformation takes place. Fig. 8.41b is another presentation of the forces at work. Feed, ideally deposited in a uniform layer on the die, is pulled into the space (nip) between roller and die and compressed. Friction between roller, die, and material as well as interparticle friction in the mass are responsible for the pull of the feed into the nip and for densification. Smooth surfaces of roller and/or die may result in slip. Axial grooves in the roller, which may also favor build-up of a thin layer of material, and the above mentioned residual layer of densified feed on the die effectively reduce slip. Low interparticle resistance to flow or a distinct plasticity result in a more or less pronounced tendency of the mass to avoid the squeeze" (back-flow), thus reducing densification and potentially choking the machine (see above). 

SCTcw restriction or choke ring An intermediate portion of a screw that offers a resistance to the forward melt flow of material. 

I would next instance the 1931 paper by Adamstone of Urbana, who analyzed with care the condition of the chick embryo which would ultimately perish before the end of incubation, as had been determined by his colleague L. E. Card (1929). In this first study by an embryologist, Adam-stone (1931) encountered the phenomena of multiple hemorrhages in embryos which had passed the early eritical stages of development— hemorrhages quite analogous to those observed in rat embryos in the beautiful studies of Mason some years later. Adamstone next described clearly the way in which the circulatory system of the embryo is choked off by mesoderm proliferation, a proliferation which creates a peculiar lethal ring in the blastoderm. 

A sulphuric acid piant can run efficiently with elemental sulphur as a raw material (having very low ash and organic content), but this is not always available at many locations. The plants located at such places depend on imported sulphur. They can use sulphur with a more ash content (which can be cheaper and available locally in certain countries) with prefiltration of sulphur and special ring-type catalysts in converter passes which are less prone to getting choked due to ash. 

Figure 13 Deformation and loss of refractory choke ring and lining in a sulfur combustor.

---