SEMICONDUCTOR SWITCH DEVICE FOR AN AC POWER SOURCE
First Claim
1. A semiconductor switch device for an AC power source, comprising:
- a plurality of first semiconductor elements and a plurality of second semiconductor elements connected in series with a plurality input alternating current (AC) sources of an AC power source, respectively, an end of each of the second semiconductor elements being electrically connected with each other;
a plurality of output AC sources each of which is formed between an associated said first semiconductor element and an associated said second semiconductor element, each said output AC source being electrically connected to a load;
a plurality of first reverse diodes each of which is connected in parallel with an associated said first semiconductor element; and
a plurality of second reverse diodes each of which is connected in parallel with an associated said second semiconductor element.
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Abstract
A semiconductor switch device for an AC power source comprises several first semiconductor elements and several second semiconductor elements connected in series with a plurality input AC sources of an AC power source, respectively. An end of each of the second semiconductor elements is electrically connected with each other. An output AC sources is formed between each first semiconductor element and its associated second semiconductor element, each output AC source being electrically connected to a load. A first reverse diode is connected in parallel with each first semiconductor element and a second reverse diode is connected in parallel with each second semiconductor element. A continuous closed circuit is formed by the load and one of the second semiconductor elements when the AC power source is cut off, thereby avoiding momentary over-voltage.
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Citations
7 Claims
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1. A semiconductor switch device for an AC power source, comprising:
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a plurality of first semiconductor elements and a plurality of second semiconductor elements connected in series with a plurality input alternating current (AC) sources of an AC power source, respectively, an end of each of the second semiconductor elements being electrically connected with each other;
a plurality of output AC sources each of which is formed between an associated said first semiconductor element and an associated said second semiconductor element, each said output AC source being electrically connected to a load;
a plurality of first reverse diodes each of which is connected in parallel with an associated said first semiconductor element; and
a plurality of second reverse diodes each of which is connected in parallel with an associated said second semiconductor element. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification