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
Apparatus and methods for providing efficient space-time structures for preambles, pilots and data for multi-input, multi-output communications systems
Bullet lens design for the dasal seeker
Program recording medium, image processing apparatus, imaging apparatus, and image processing method
Electrical connector
Method for producing a flexible composite elastomeric polyurethane skin
System and method for generating profile morphing using cephalometric tracing data
Halogen-free flame retardants for epoxy resin systems
  Randomly Featured Patents
Clam gun with vent mechanism for easing withdrawal from the sand
Layouts for CMOS SRAM cells and devices
Vehicle wheel
High speed semiconductor characterization technique
Inspection port for turbines
Compliant thermoelectric converter
Antihypertensive 1-substituted-4-(2-oxo-1-imidazolidinyl) piperidines
Helically-wound cable and method
Adjustable wrench head and handle system
Pneumatic and hydraulic power control of drill