ADJUSTABLE DECREASING TRANSFORMER OF DIRECT VOLTAGE Russian patent published in 2006 - IPC H02M3/06 

FIELD: transforming equipment engineering, possible use in electric power sources.

SUBSTANCE: adjustable decreasing transformer of direct voltage contains input, output and common clamps for connection of, respectively, source of direct voltage and load, n chains connected by their first outputs to common clamp 25. Each chain consists of serially connected discharge diode 1, capacitor 2 and controllable discharge key 3. transformer also contains (n-1) discharge diodes 4, each of which is enabled between differently named outputs of capacitors of appropriate adjacent chains, controllable charge key 5, enabled between input clamp and discharge bus 6, controllable adjusting elements 7-11, each of which is connected in parallel to discharge diode 4 of appropriate chain and two groups of commutation elements, while each commutation element of first group 12-17 is enabled in parallel to discharge key 3 of appropriate chain, while each commutation element of second group 18-23 is enabled between discharge bus 6 and common point of connection 24 of capacitor 2 and discharge key 3 of appropriate circuit. Introduced into transformer are n groups of m commutation elements and (m-1) output clamps for connecting additional loads.

EFFECT: extended functional capabilities due to provision of operation of device for several loads with varying output voltages; significantly improved mass-dimensional characteristics.

1 dwg