US4039945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring and checking parameters of electric circuit elements
Assignee: Individual
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Filing: 1975-07-21
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Granted: 1977-08-02
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Expires: 1995-07-21
Abstract
Abstract A device for measuring and checking parameters of elements of electric circuits having at least three elements forming a closed loop, comprising a testing signal source whose output is intended to be connected to a first lead of a first element being checked, a first operational amplifier, a first group of auxiliary amplifiers whose inputs are intended to be connected to the remaining leads of the first element being checked, and at least one operational amplifier of a second group, whose input is intended to be connected to a first lead of at least one second element of the electric circuit, whose second lead is connected to the first lead of the first element being checked, as well as a data processing means, the outputs of all the operational amplifiers being connected to an input of the data processing means.
Inventors
- 👤 Stanislav Vasilievich Ugolnikov
- 👤 Stanislav Petrovich Kosach
- 👤 Vladimir Davydovich Kaplun
- 👤 Valentin Ivanovich Zhitnik
- 👤 Anatoly Yakovlevich Bulgakov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:37
CPC Classifications
G; G01; G01R; G01R31/00; G01R31/28; G01R31/2832; G01R31/2836; G01R31/2843
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
216 words
A device for measuring and checking the parameters of at least one element of an electric circuit having at least three elements forming a closed loop, said device comprising: a testing signal source having an output for connection to a first lead of a first element being checked; a first operational amplifier with a calibrated element in its feedback circuit and having an input for connection to a second lead of said first element being checked, a common conductor of the first operational amplifier being connected to a common conductor of said testing signal source; a first group of auxiliary operational amplifiers whose number is equal to the number of the remaining additional leads of said first element being checked, the input of each said auxiliary operational amplifier being intended for connection to the respective additional lead of said first element being checked; at least one auxiliary operational amplifier of a second group, having an input for connection to a first lead of at least one second element of said electric circuit, the second element having a second lead connected to said first lead of said first element being checked; a data processing means having inputs connected respectively to the outputs of all of said operational amplifiers and to the output of said testing signal source.
Claim 2
Independent Claim
216 words
A device for measuring and checking the parameters of at least one element of an electric circuit having at least three elements forming a closed loop, said device comprising: a testing signal source having an output for connection to a first lead of a first element being checked; a first operational amplifier with a calibrated element in its feedback circuit and having an input for connection to a second lead of said first element being checked, a common conductor of the first operational amplifier being connected to a common conductor of said testing signal source; a first group of auxiliary operational amplifiers whose number is equal to the number of the remaining additional leads of said first element being checked, the input of each said auxiliary operational amplifier being intended for connection to the respective additional lead of said first element being checked; at least one auxiliary operational amplifier of a second group, having an input for connection to a first lead of at least one second element of said electric circuit, the second element having a second lead connected to said first lead of said first element being checked; a data processing means having inputs connected respectively to the outputs of all of said operational amplifiers and to the output of said testing signal source.
Claim 3
Dependent Claim
84 words
The device as claimed in claim 1, wherein for simultaneously checking said first element and said second elements of the electric circuit, the second leads of the second elements are interconnected to the first lead of said first element being checked, the number of said auxiliary amplifiers of the second group is equal to the number of said second elements, the input of each said auxiliary amplifier of the second group being intended for connection to each first lead of the respective second element.
Claim 4
Dependent Claim
75 words
The device as claimed in claim 1, wherein for checking only one first element of the electric circuit, provision is made for one said auxiliary operational amplifier of the second group, the auxiliary operational amplifier having an input intended for connection to all the first leads of said second elements of the electric circuit, wherein the second leads of the second elements are directly connected to the first lead of said first element being checked.
Claim 5
Dependent Claim
95 words
The device as claimed in claim 1, wherein the calibrated element in the feedback circuit of each said operational amplifier is constructed in the form of inverting and non-inverting links for transforming feedback resistance, outputs of said inverting links for transforming feedback resistance being connected to a non-inverting input of the respective operational amplifier, outputs of said non-inverting links for transforming feedback resistance being connected to an inverting input of the said same operational amplifier, inputs of said inverting and non-inverting links for transforming feedback resistance being connected to the output of said operational amplifier.
Claim 6
Dependent Claim
89 words
The device as claimed in claim 4, wherein the inverting link for transforming feedback resistance is provided with an operational link amplifier and a first calibrated resistor interposed between the output and the inverting input of said operational amplifier wherein said operational amplifier has an output connected via a second calibrated resistor to the output of this inverting link for transforming feedback resistance, the input of said inverting link for transforming feedback resistance being connected via a third calibrated resistor to the inverting input of said operational link amplifier.
Claim 7
Dependent Claim
93 words
The device as claimed in claim 4, wherein said non-inverting link for transforming feedback resistance is provided with an operational link amplifier and a first calibrated resistor interposed between the output of the inverting input of said operational link amplifier, the output of said operational link amplifier being connected via a second calibrated resistor to the output of this non-inverting link for transforming feedback resistance, the input of this non-inverting link for transforming feedback resistance being connected via a third calibrated resistor to the non-inverting input of said operational amplifier of this link.
Claim 8
Dependent Claim
90 words
The device as claimed in claim 6, wherein the calibrated element has said non-inverting links for transforming feedback resistance making up a series alternating circuit, wherein the outputs of all said links for transforming feedback resistance are interconnected, the output of each said operational amplifier of the non-inverting link for transforming feedback resistance being connected to the input of the following non-inverting link for transforming feedback resistance, the output of said operational amplifier of said link being connected to the input of the following non-inverting link for transforming feedback resistance.
References Cited (Backward Citations)
US3833853A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-01 | 1981-01-31 | 1981-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-01 | 1985-01-31 | 1985-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-01 | 1989-01-31 | 1989-08-02 | $7700.00 | Window Closed / Lapsed |