Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1991-05-02
1994-10-18
Voeltz, Emanuel T.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 24, 323266, H02M 7217, H02M 3337
Patent
active
053574184
ABSTRACT:
The present invention relates to a hybrid power supply for converting an alternating input signal fed to its input into a direct output signal produced at its output. The hybrid power supply comprises a rectifier for converting the alternating input signal into a mono-alternation signal; a capacitor for smoothing the mono-alternation signal into a direct signal; a switching regulator stage coupled to the capacitor for generating a pre-regulated direct signal having a constant amplitude; a 1/X frequency modulating circuit for generating two switching pulsed signals of constant pulse width at a variable frequency according to a 1/X function in relation to the direct signal originating from the capacitor; and a linear regulator stage coupled to the switching regulator stage for regulating the pre-regulated direct signal, and for generating the direct output signal. A 1/X pulse with modulating circuit can also be provided for generating two variable pulse width signals synchronized with the switching pulsed signals for allowing adjustment of the output. Low power dissipation of the power supply elements allow to use an airtight shielding to eliminates interferences.
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