Patent EA-004948-B1 (EA)
Title: D.c. converter
Inventor: GONCHAROV ALEXANDER YURIEVICH
IPC: H02M3/335
Filed: 2003-06-04
Abstract: A D.C. converter, comprising a switch-over transistor, a transformer, a rectifier, a filter, a shut-off resistor, s control block, plus and minus inputs and outputs, the first output of the shut-off resistor is connected to the gate of the switch-over transistor, the output of which is connected to the minus output, the head of the transformer primary winding is connected to plus input output, the end of the transformer primary winding is connected to a sink of the switch-over transistor, and the transformer secondary winding is connected via the rectifier and the filter to the plus and minus outputs of the first channel of the load channel block, characterized in that further comprises a second transformer with corresponding rectifier elements and comprises a shim-controller as a control block, a third transformer, 3 transistors, current resistor, second secondary windings of the first and second transformers and a controlled stabilitron, and 4 diodes, a stabilitron, 23 resistors and 13 capacitors, wherein the head of the transformer winding is connected to the first output of the first resistor, and its end with start of the primary winding of the second transformer, the end of which is connected to a sink of the switch-over transistor, the head of which is connected to the first outputs of the 10-th, 12-th, 13-th and the current resistor, 1-st, 3-rd, and 4-th capacitors, with the head of the second winding of the first transformer and to the second outputs of the shim-controller, the 6-th output of which is connected to the second output of the shut-off resistor, the second output of the current resistor is connected via the input filter to the minus input output and to the first outputs of the 5-th and 6-th capacitors, the 2-nd output of the 5-th capacitor is connected to the base of the first transistor and to the first output of the 14-th resistor, the second output of which is connected to the second output of the 6-th capacitor, the first transistor collector and the first output of the 8-th resistor, the second output of which is connected to the first outputs of the 6-th and 7-th resistors and the base of the second transistors, the collector of which is connected to the first outputs of the 4-th and the fifth and the second-output of the 7-th resistors, the emitter of the 3-rd transistor, the 8-th output of the shim-controller and the first output of the 2-nd capacitor, the second output of which is connected to the 5-th output of the shim-controller, to the first outputs of the 7-th and 13-th capacitors, the 15-th resistor and to the end of the secondary winding of the third transformer, the head of which via directly connected the third diode is connected to the 2-nd output of the 15-th resistor and the 7-th capacitor and to the first output of the 11-th resistor, the output of which is connected to the 3-rd output of the shim-controller, to the first outputs of the stabilitron and the 9-th resistor, the output of the 3-rd capacitor and the collector of the 3-rd transistor, the base of which is connected to the 2-nd outputs of the 5-th and 10-th resistors, the emitter of the first transistor is connected to the 2-nd output of the 13-th resistor, the emitter of the 2-nd transistor is connected to the second outputs of the 10-th and 12-th resistors, the second outputs of the 4-th and 6-th resistors and the 4-th capacitor are connected to the 4-th output of the shim-controller, the first output of which via directly connected second diode is connected to the converter input/output and to the first output of the third resistor, the second output if which is connected to the 7-th output of the shim-controller, to the second outputs of the 1-st and the 13-th capacitors, the stabilitron and the first resistor and the first output of the second resistor, the second output of which is connected to the end of the second secondary winding of the first transformer via the inversely connected the first diode, the head of the first secondary winding of the second transformer is connected to the filter plus input and to the first inputs of the 19-th, 20-th and 21-th resistor via the corresponding rectifier elements, and its end to the filter minus input and to the first outputs of the 22-th and 23-th resistor, 11-th and 12-th capacitors and to the first output of the controlled stabilitron, the second output of which is connected to the first outputs of the 18-th and resistor and 9-th condenser, and the third output of which to the second outputs of the 21-st, 22-nd and 23-rd resistors and the 9-th capacitor and to the 10-th output of the 10-th capacitor, the second output of which is connected to the second outputs of the 20-th resistor and the 11-th capacitor, the second output of the 19-th resistor is connected to the second output of the 12-th capacitor, the 18-th resistor and the first output of the 17-th resistor, the second output of which is connected to the end of the primary winding of the third capacitor and to the first output of the 8-th capacitor, the second output of which is connected to the head of the primary winding of the third transformer via the 16-th resistor and via inversely connected 4-th diode to the head of the third secondary winding of the second transformer, the end of which is connected to the filter minus input.