Showing papers on "Forward converter published in 1968"

Power converter circuit operating as an electric potential transformer

Abstract: A POWER CONVERTER CIRCUIT OF ELECTRONIC TRANSFORMER FOR AN A.-C. SUPPLY COMPRISES A LINEAR TRANSFORMER WHOSE WINDINGS ARE CONNECTED RESPECTIVELY TO INPUT AND OUTPUT TERMINALS THROUGH INVERTER CONFIGURATION SWITCHING CIRCUITS EMPLOYING BIDIRECTIONAL CONDUCTING SOLID STATE SWITCHING DEVICES OR INVERSE-PARALLEL PAIRS OF UNIDIRECTIONAL CONDUCTION SOLID STATE SWITCHING DEVICES. BY SYNCHRONOUSLY RENDERING CONDUCTIVE ONE SWITCHING DEVICE IN THE PRIMARY AND SECONDARY SIDE SWITCHING CIRCUITS, AND ALTERNATELY AND SYNCHRONOUSLY RENDERING CONDUCTIVE ANOTHER DEVICE IN EACH CIRCUIT AT A SWITCHING RATE SUBSTANTIALLY HIGHER THAN THE SUPPLY FREQUENCY, THE INPUT POTENTIAL IS CONVERTED TO A HIGHER FREQUENCY WAVE, TRANSFORMED, AND RECONSTRUCTED AT THE OUTPUT TERMINALS. IN THIS WAY THE SIZE OF THE TRANSFORMER IS REDUCED.

Regulated voltage converter

Abstract: A volt-second controlled DC to DC converter for use in capacitive discharge circuits such as flame heater exciters and ignition systems. A transistor switch in series with the primary of a transformer is turned on for a period of time inversely proportional to the supply voltage, thereby resulting in a constant peak primary current which is independent of the supply voltage. When the transistor switch is turned off, the secondary current produced by the collapsing magnetic field charges a capacitor which is connected in a capacitive discharge system.

Three-phase static converter with a stabilized output voltage

Abstract: A three-phase static converter with a stabilized output voltage. The static converter includes a rectifier having an input and an output, transformer filter having a primary connected in parallel with the output of the rectifier and a capacitor connected in series with the primary, a self-contained three-phase inverter with a regulated output voltage, a variable-reluctance regulating transformer connected to the self-contained inverter at the output thereof to regulate its output voltage, the self-contained inverter electrically coupled to the rectifier through the secondary of the transformer filter, the secondary having one end connected to the output of the rectifier and the other end connected to the input of the self-contained inverter so as to be connected in series therebetween.

Current converter arrangement comprising a plurality of converter elements connected in series

Abstract: An electrical converter arrangement comprises a plurality of series-connected controllable current converter elements such as thyristors which together form one and the same path for current flow. The converter elements forming this current path are not fired simultaneously but rather are fired sequentially either singly or in groups by means of a pulse generator in cooperation with delay means interposed in the circuit connections to the various converter elements, or element groups so that the proper time delays are established for ,firing. By firing the converter elements in sequence, i.e. in stages, one avoids formation of undesirable steep voltage jumps. The required sequential firing delays can be obtained by use of individual delay devices having progressively longer time delays, or a ring counter can be utilized.

DC to DC converter regulated by a constant- frequency duty-cycle generator.

Abstract: Closed loop regulated flyback DC to DC converter using constant frequency generator for duty cycle control