H - Electricity – 02 – M
Patent
H - Electricity
02
M
H02M 7/155 (2006.01) G05F 1/625 (2006.01) H02M 1/10 (2006.01)
Patent
CA 2134743
An AC/DC power supply is connectable to either AC or DC and includes a power transformer circuit, a rectifier circuit, and a switching circuit having first and second switching devices effective when the voltage input is AC and DC, respectively, to output pulses to the power transformer circuit. A control circuit, when sensing an AC voltage input, enables the rectifier to rectify the voltage input before applied to the power transformer circuit, and also enables the first switching device to output pulses to the power transformer circuit. The control circuit, when sensing a DC voltage input, disables the rectifier and enables the second switching device to output pulses to the power transformer circuit. A duty-cycle control circuit controls both the first and second switching devices to control the duty cycle of the pulses supplied thereby to the power transformer circuit.
Adahan Carmeli
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Flight Medical Innovations Ltd.
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