FIELD: electricity.
SUBSTANCE: in the duple converter working without a regulated pause with synchronising generator (22), strobe generator (29) is introduced which periodically, for a short period blocks the disconnecting trigger for protection against an overload is executed on transistors (19, 33). During this time protection is transferred into the regime of current limitation, and power transistor keys (1, 2) - in an active mode of operation. The porosity of the pulses of the strobe generator (29) is selected so as to avoid overheating of transistor keys (1, 2). The high-speed protection of the converter makes it possible to connect the converter to the capacitive load and to provide reliable work of transistor keys (1, 2) with overloads and short circuits of output.
EFFECT: increase in the reliability of the converter with overloads and short circuits of output with the guarantee of being started by the capacitive load.
3 dwg
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Authors
Dates
2008-09-20—Published
2007-04-19—Filed