Invention Grant
- Patent Title: Modulation circuit for DC-DC converter with R-C oscillator
- Patent Title (中): 具有R-C振荡器的DC-DC转换器的调制电路
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Application No.: US671451Application Date: 1984-11-14
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Publication No.: US4628428APublication Date: 1986-12-09
- Inventor: John D. Walker
- Applicant: John D. Walker
- Applicant Address: GB2
- Assignee: The General Electric Company, p.l.c.
- Current Assignee: The General Electric Company, p.l.c.
- Current Assignee Address: GB2
- Priority: GBX8334373 19831223
- Main IPC: H02M3/28
- IPC: H02M3/28 ; H02M3/335
Abstract:
A switched mode power supply in which the power switch (TR1) is modulated by a resistance-capacitance oscillator (COM, R1-R5, CT). During each on-period of the switch (TR1) a secondary winding (WS) of a sense transformer (TX2) develops a unipolar sense voltage which is applied to a capacitor (CT) in the oscillator while it is charging, so as to vary the charging time and hence the on-period, the off-period of the switch (TR1) being constant.
Public/Granted literature
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