Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
183 words
A DC power supply for providing power to a utilization device comprising: a source of AC power, rectifier means coupled to said source of AC power, a switching regulator coupled to said rectifier means and being responsive to switching pulses applied to a terminal, said switching regulator responding to the pulse width of said switching pulses to provide a DC voltage, a source of modulated pulses for providing modulated pulses to form said switching pulses, said modulated pulses and said switching pulses having a pulse repetition frequency that is continuously modulated over a selected frequency range, control means coupled to the terminal of said switching regulator and being responsive to said modulated pulses and a feedback voltage to provide said switching pulses having pulse repetition frequencies determined by said modulated pulses and pulse widths determined by said feedback voltage, a DC to AC converter coupled to said switching regulator for responding to said DC voltage, transformer means coupled to said DC and AC converter, and rectifier and filter means coupled between said transformer means and said utilization device and providing said feedback voltage.
Claim 2
Dependent Claim
183 words
A DC power supply for providing power to a utilization device comprising: a source of AC power, rectifier means coupled to said source of AC power, a switching regulator coupled to said rectifier means and being responsive to switching pulses applied to a terminal, said switching regulator responding to the pulse width of said switching pulses to provide a DC voltage, a source of modulated pulses for providing modulated pulses to form said switching pulses, said modulated pulses and said switching pulses having a pulse repetition frequency that is continuously modulated over a selected frequency range, control means coupled to the terminal of said switching regulator and being responsive to said modulated pulses and a feedback voltage to provide said switching pulses having pulse repetition frequencies determined by said modulated pulses and pulse widths determined by said feedback voltage, a DC to AC converter coupled to said switching regulator for responding to said DC voltage, transformer means coupled to said DC and AC converter, and rectifier and filter means coupled between said transformer means and said utilization device and providing said feedback voltage.
Claim 3
Dependent Claim
28 words
The combination of claim 1 in which said source of modulated pulses includes means to modulate the pulse repetition frequency of said pulses at a predetermined modulation rate.
Claim 4
Dependent Claim
36 words
The combination of claim 1 in which said DC to AC converter has a terminal responsive to said switching pulses and said control means is also coupled to said terminal of said DC to AC converter.
Claim 5
Dependent Claim
44 words
The combination of claim 3 in which said control means includes a comparator responsive to a ramp generator and to an error determining circuit, said ramp generator and said error determining circuit being respectively responsive to said modulated pulses and to said feedback voltage.
Claim 6
Dependent Claim
39 words
The combination of claim 1 in which said source of modulated pulses includes a pulse generator controlled by a switching frequency modulator, said modulation of the pulse repetition frequency over a selected frequency range having a predetermined repetition frequency.
Claim 7
Dependent Claim
41 words
The combination of claim 3 in which said source of modulated pulses includes a pulse generator controlled by a pulse frequency modulator to provide said modulated pulses at a pulse repetition frequency that is continuously modulated at a predetermined modulation rate.