Dc-dc converter

Details Dc-dc converter Dc-dc converter

H - Electricity

02

M

321/29

H02M 3/335 (2006.01)

Patent

CA 1227534

ABSTRACT DC-DC Converter 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.

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