High frequency parametric voltage regulator

Claim 2

A voltage regulator comprising: terminal means for connection to a source of unregulated voltage; an inverter coupled to said terminal means for producing output pulses having a frequency higher than the frequency of said unregulated voltage, said inverter comprising first and second conducting means adapted to be alternately caused to conduct or not conduct; a parametric device employing an inductor comprising a load winding on core means, a capacitor, means connecting said inductor and said capacitor in an energy storing tank circuit, and means for varying the self-inductance of said inductor at twice the frequency of the output of the inverter, said means comprising a control winding wound on said means such that flux from said control winding does not cut said load winding and coupled to said inverter, said parametric device providing complete isolation of the output from the control winding, the output waveform being determined by the tank circuit; an output circuit coupled to said tank circuit for delivering an output voltage; first means coupled to said output circuit for producing pulses having a repetition rate corresponding to the magnitude of said output voltage; logic circuit means coupled to said first means and to said inverter for alternately causing said first and second conducting means to conduct or not conduct in response to said pulses from said first means, said logic circuit means comprising signal producing means for producing a first signal which causes said first conducting means to conduct, a second signal which causes said first conducting means to cease conducting, a third signal which causes said second conducting means to conduct and a fourth signal which causes said second conducting means to cease conducting, and a one shot multivibrator coupled to receive the pulses from said first means and having a variable time constant network providing delay means fOr delaying the production of said third signal until said first conducting means have ceased conducting and for delaying said first signal until said second conducting means have ceased conducting.

Claim 3

A voltage regulator comprising: terminal means for connection to a source of unregulated voltage; an inverter coupled to said terminal means for producing output pulses having a frequency higher than the frequency of said unregulated voltage, said inverter comprising first and second conducting means consisting of transistors adapted to be alternately caused to conduct or not conduct; a parametric device employing an inductor comprising a load winding on core means, a capacitor, means connecting said inductor and said capacitor in an energy storing tank circuit, and means for varying the self-inductance of said inductor at twice the frequency of the output of the inverter, said means comprising a control winding wound on said means such that flux from said control winding does not cut said load winding and coupled to said inverter, said parametric device providing complete isolation of the output from the control winding, the output waveform being determined by the tank circuit; an output circuit coupled to said tank circuit for delivering an output voltage; first means coupled to said output circuit for producing pulses having a repetition rate corresponding to the magnitude of said output voltage; logic circuit means coupled to said first means and to said inverter for alternately causing said first and second conducting means to conduct or not conduct in response to said pulses from said first means, said logic circuit means comprising signal producing means for producing a first signal which causes said first conducting means to conduct, a second signal which causes said first conducting means to cease conducting, a third signal which causes said second conducting means to conduct and a fourth signal which causes said second conducting means to cease conducting, wherein said signal producing means include first and second transformers each having a pair of oppositely poled primary windings and a secondary winding, the secondary winding of each transformer being coupled in the base circuit of a corresponding transistor; and delay means for delaying the production of said third signal until said first conducting means have ceased conducting and for delaying said first signal until said second conducting means have ceased conducting.

Claim 4

A voltage regulator comprising: terminal means for connection to a source of unregulated voltage; an inverter coupled to said terminal means for producing output pulses having a frequency higher than the frequency of said unregulated voltage, said inverter comprising first and second conducting means consisting of transistors adapted to be alternately caused to conduct or not conduct; a parametric device employing an inductor comprising a load winding on core means, a capacitor, means connecting said inductor and said capacitor in an energy storing tank circuit, and means for varying the self-inductance of said inductor at twice the frequency of the output of the inverter, said means comprising a control winding wound on said means such that flux from said control winding does not cut said load winding and coupled to said inverter, said parametric device providing complete isolation of the output from the control winding, the output waveform being determined by the tank circuit; an output circuit coupled to said tank circuit for delivering an output voltage; first means coupled to said output circuit for producing pulses having a repetition rate corresponding to the magnitude of said output voltage; logic circuit means coupled to said first means and to said inverter for alternately causing said first and second conducting means to conduct or not conduct in response to said pulses from said first means, said logic circuit means comprising signal producing means for producing a first signal which causes said first conducting means to conduct, a second signal which causes said first conducting means to cease conducting, a third signal which causes said second conducting means to conduct and a fourth signal which causes said second conducting means to cease conducting, wherein said signal producing means include first and second transformers each having a pair of oppositely poled primary windings and a secondary winding, the secondary winding of each transformer being coupled in the base circuit of a corresponding transistor; and delay means for delaying the production of said third signal until said first conducting means have ceased conducting and for delaying said first signal until said second conducting means have ceased conducting.

Claim 5

The regulator of claim 2 wherein said transformers are each provided with a second secondary winding, said secondary windings being coupled to corresponding transistors to provide said transistors with regenerative feedback.