Circuit arrangement for producing an alternating voltage
First Claim
1. A circuit arrangement for producing an alternating output voltage from a d.c. input voltage comprising:
- means for providing pulse width modulated signals at a high frequency;
first and second voltage inverter circuit means, each controlled by said pulse width modulated signals at a high frequency, for producing the positive half waves of the alternating output voltage and the negative half waves of the output voltage respectively from a d.c. input signal;
means for connecting the outputs of said first and second voltage inverter circuit means in series across a common load;
first and second electronic power switches connected across the outputs of said first and second voltage inverter circuit means respectively; and
means for controlling said power switches to short-circuit the output of the respective first and second voltage inverter circuit means during the time it is not producing output energy.
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Abstract
Circuit arrangement for producing an alternating output voltage from a d.c. input voltage employing two d.c. to a.c. voltage converters, i.e., inverter circuits, which are controlled by high frequency pulse width modulated signals so that one of the inverter circuits produces the positive half waves of the alternating output voltage and the other inverter circuit produces the negative half waves of the alternating output voltage. The outputs of the two voltage inverter circuits are connected in series across a common load and controlled electronic power switches are provided to short-circuit the output of the respective inverter circuit during the time period when it is not producing output energy.
33 Citations
10 Claims
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1. A circuit arrangement for producing an alternating output voltage from a d.c. input voltage comprising:
- means for providing pulse width modulated signals at a high frequency;
first and second voltage inverter circuit means, each controlled by said pulse width modulated signals at a high frequency, for producing the positive half waves of the alternating output voltage and the negative half waves of the output voltage respectively from a d.c. input signal;
means for connecting the outputs of said first and second voltage inverter circuit means in series across a common load;
first and second electronic power switches connected across the outputs of said first and second voltage inverter circuit means respectively; and
means for controlling said power switches to short-circuit the output of the respective first and second voltage inverter circuit means during the time it is not producing output energy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- means for providing pulse width modulated signals at a high frequency;
Specification