BRIDGE TYPE PHASE DETECTION DEVICE
First Claim
1. A bridge type phase detection device comprises an electronic switch, a PWM IC, one or more than one transformer, a plurality of tubes, a voltage-detecting protection circuit and a first, second and third impedance;
- wherein a primary side of said transformer and said PWM IC coupling with said electronic switch, a secondary side of said transformer coupling with a first end of each one of said plurality of tubes, while a second end of each one of said plurality of tubes being grounded, and said voltage-detecting protection circuit coupling with said PWM IC;
said bridge type phase detection device is characterized in;
a first tube of said plurality of tubes has a phase opposite to that of a second tube of said plurality of tubes, and a first end of said first impedance coupling with said secondary side of said transformer and a first end of said first tube, a first end of said second impedance coupling with said secondary side of said transformer and a first end of said second tube, then a second end of said first impedance connecting to a second end of said second impedance to form a detection point, said detection point coupling with said third impedance and said voltage-detecting protection circuit;
said detection point having a voltage value derived from calculating a sum of said phase of said first impedance and that of said second impedance, said voltage-detecting protection circuit detecting said detection point and obtaining approximately zero voltage at said detection point during normal operation, if said voltage-detecting protection circuit detecting a non-zero voltage, it is concluded that a tube anomaly is present.
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Accused Products
Abstract
A bridge type phase detection device comprises one or more than one transformer, a plurality of tubes, a voltage-detecting protection circuit and a first, second and third impedance, wherein a first tube of said plurality of tubes has a phase opposite to that of a second tube of said plurality of tubes, and a first end of said first impedance coupling with a secondary side of said transformer and a first end of said first tube, a first end of said second impedance coupling with said secondary side of said transformer and a first end of said second tube, then a second end of said first impedance connecting to a second end of said second impedance to form a detection point, said detection point coupling with said third impedance and said voltage-detecting protection circuit; said detection point having a voltage value derived from calculating a sum of said phase of said first impedance and that of said second impedance, then an output voltage divided among said first, two and third impedance, resulting in approximately zero voltage at said detection point during normal operation, if said voltage-detecting protection circuit detecting a non-zero voltage, it is concluded that a tube anomaly is present.
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Citations
10 Claims
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1. A bridge type phase detection device comprises an electronic switch, a PWM IC, one or more than one transformer, a plurality of tubes, a voltage-detecting protection circuit and a first, second and third impedance;
- wherein a primary side of said transformer and said PWM IC coupling with said electronic switch, a secondary side of said transformer coupling with a first end of each one of said plurality of tubes, while a second end of each one of said plurality of tubes being grounded, and said voltage-detecting protection circuit coupling with said PWM IC;
said bridge type phase detection device is characterized in;
a first tube of said plurality of tubes has a phase opposite to that of a second tube of said plurality of tubes, and a first end of said first impedance coupling with said secondary side of said transformer and a first end of said first tube, a first end of said second impedance coupling with said secondary side of said transformer and a first end of said second tube, then a second end of said first impedance connecting to a second end of said second impedance to form a detection point, said detection point coupling with said third impedance and said voltage-detecting protection circuit;
said detection point having a voltage value derived from calculating a sum of said phase of said first impedance and that of said second impedance, said voltage-detecting protection circuit detecting said detection point and obtaining approximately zero voltage at said detection point during normal operation, if said voltage-detecting protection circuit detecting a non-zero voltage, it is concluded that a tube anomaly is present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- wherein a primary side of said transformer and said PWM IC coupling with said electronic switch, a secondary side of said transformer coupling with a first end of each one of said plurality of tubes, while a second end of each one of said plurality of tubes being grounded, and said voltage-detecting protection circuit coupling with said PWM IC;
Specification