POWER SUPPLY WITH TWO INPUTS FOR ALTERNATING AND DIRECT CURRENT WITH PROGRAMMABLE CONSTANT CURRENT OUTPUT, USING A SECONDARY REDUCING TRANSFORMER Russian patent published in 2007 - IPC H02M1/10 

FIELD: electronics.

SUBSTANCE: power transformer (10) is claimed with two inputs for direct/alternating current, having double input (12, 14), used for receipt of input voltage of both alternating and constant current and with selectable output (16) for direct current voltage and second output (18) for direct current. Power transformer (10) comprises power transformer circuit (20), which includes a transformer (22) of alternating current to direct current, increasing transformer (24) of constant current, check connection circuit (26), filter circuit (25) and decreasing transformer (28) of constant current. Power transformer (10) makes it possible to solve multiple system operation organization problems concerning necessity of usage of full set of various interface components required for powering mobile devices of various type by power supply of either alternating or constant current. Also, power transformer (10) contains two outputs (16/18) for output voltage, making it possible to simultaneously provide power to a set of mobile devices with varying power requirements, using a single transformer.

EFFECT: increased efficiency.

4 cl, 6 dwg