Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Ferroresonant three-phase constant AC voltage transformer arrangement with compensation for unbalanced loads










Image Number 7 for United States Patent #4893069.

A ferroresonant three-phase constant AC voltage transformer comprising three transformer iron cores with one for each corresponding input supply phase, primary windings and secondary windings formed on each of the transformer iron cores, series reactance components or reactors connected in series, with the primary windings, automatic voltage regulating means for controlling secondary output voltages generated at the secondary windings to a predetermined target value, compensating windings formed so as to be inductively coupled to each of the series reactance components or reactors, and means for connecting the compensating windings in series with each other to form a closed loop circuit. The secondary output voltages are theoretically kept in balanced condition even when the loads or the primary input voltages or both are unbalanced.








 
 
  Recently Added Patents
Method for production of fermentable sugars from biomass
Method and system for the geolocation of a radio beacon in a search and rescue system
Sparse network almanac
Method of requesting CQI reports
Active element machine computation
Semiconductor device having a bonding pad and shield structure of different thickness
Communication apparatus, communication method, and communication system
  Randomly Featured Patents
Junction-shorting type semiconductor read-only memory having increased speed and increased integration density
Temperature sensor
Alumina material useful with thin film heads
Keyboard support platform
Recording apparatus and recording head substrate for use in the same
Telephone base unit
Plants and seeds of hybrid corn variety CH538026
Fragrance bottle
Interlocking building panel
Shoe with form fitting sole