Power supply unit and static eliminator
First Claim
1. A power supply unit comprising:
- a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end that is electrically connected to ground;
a first rectification circuit including a first diode that is electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal;
a second rectification circuit including a second diode that is electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal; and
a capacitor connected in series on a path extending from a node between the second end of the secondary winding and the first rectification circuit and the second rectification circuit to the ground through the secondary winding.
1 Assignment
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Accused Products
Abstract
A power supply unit includes a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end electrically connected to ground, a positive-side rectification circuit including a diode electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal, a negative-side rectification circuit including a diode electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal, and a capacitor provided on a path from a node between the second end of the secondary winding and the positive-side rectification circuit and the negative-side rectification circuit to the ground through the secondary winding.
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Citations
19 Claims
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1. A power supply unit comprising:
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a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end that is electrically connected to ground; a first rectification circuit including a first diode that is electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to a positive-side output terminal; a second rectification circuit including a second diode that is electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to a negative-side output terminal; and a capacitor connected in series on a path extending from a node between the second end of the secondary winding and the first rectification circuit and the second rectification circuit to the ground through the secondary winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A power supply unit comprising:
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a first positive and negative output circuit; and a second positive and negative output circuit;
whereineach of the first positive and negative output circuit and the second positive and negative output circuit includes; a positive-side output terminal and a negative-side output terminal; a transformer including a primary winding that receives an alternating-current voltage and a secondary winding including a first end that is electrically connected to ground; a first rectification circuit including a first diode which is electrically connected to a second end of the secondary winding, an anode of which is electrically connected to the second end, and a cathode of which is electrically connected to the positive-side output terminal; a second rectification circuit including a second diode which is electrically connected to the second end of the secondary winding, a cathode of which is electrically connected to the second end, and an anode of which is electrically connected to the negative-side output terminal; and a capacitor provided on a path from a node between the second end of the secondary winding and the first rectification circuit and the second rectification circuit to the ground through the secondary winding; the positive-side output terminal of the first positive and negative output circuit is electrically connected to the negative-side output terminal of the second positive and negative output circuit via a first resistor and a second resistor; the negative-side output terminal of the first positive and negative output circuit is electrically connected to the positive-side output terminal of the second positive and negative output circuit via a third resistor and a fourth resistor; a node between the first resistor and the second resistor is electrically connected to a first positive and negative output terminal; and a node between the third resistor and the fourth resistor is electrically connected to a second positive and negative output terminal. - View Dependent Claims (18, 19)
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Specification