Positioning device
First Claim
1. A locating device, comprising:
- an AC voltage locating apparatus including;
a first receiving apparatus configured to receive a first coupling signal from a locatable object;
a second receiving apparatus configured to receive at least a second coupling signal from the locatable object;
a first amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive a reference signal, the first amplifier circuit being configured to amplify a difference between the first coupling signal and the reference signal in at least one operating state; and
a second amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive the second coupling signal from the second receiving apparatus, the second amplifier circuit being configured to amplify a difference between the first coupling signal and the second coupling signal in at least one operating state.
1 Assignment
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Accused Products
Abstract
A locating device includes an AC voltage locating apparatus. The AC voltage locating apparatus has a first receiving apparatus configured to receive a first coupling signal from a locatable object. The AC voltage locating apparatus also has at least a second receiving apparatus configured to receive at least a second coupling signal from the locatable object. The AC voltage locating apparatus also has at least a first amplifier circuit configured to amplify a difference of the first coupling signal relative to a reference signal in at least one operating. The AC voltage locating apparatus also has at least a second amplifier circuit configured to amplify a difference of the first coupling signal and the second coupling signal in at least one operating state.
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Citations
10 Claims
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1. A locating device, comprising:
an AC voltage locating apparatus including; a first receiving apparatus configured to receive a first coupling signal from a locatable object; a second receiving apparatus configured to receive at least a second coupling signal from the locatable object; a first amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive a reference signal, the first amplifier circuit being configured to amplify a difference between the first coupling signal and the reference signal in at least one operating state; and a second amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive the second coupling signal from the second receiving apparatus, the second amplifier circuit being configured to amplify a difference between the first coupling signal and the second coupling signal in at least one operating state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An AC voltage locating apparatus of a locating device, comprising:
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a first receiving apparatus configured to receive a first coupling signal from a locatable object; a second receiving apparatus configured to receive at least a second coupling signal from the locatable object; a first amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive a reference signal, the first amplifier circuit being configured to amplify a difference between the first coupling signal and the reference signal in at least one operating state; and a second amplifier circuit having a first input operably connected to receive the first coupling signal from the first receiving apparatus and a second input operably connected to receive the second coupling signal from the second receiving apparatus, the second amplifier circuit being configured to amplify a difference between the first coupling signal and the second coupling signal in at least one operating state.
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Specification