US4551668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Voltage sensing at loads remotely connected to power supplies
Assignee: Reliance Comm Tec Corp
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Filing: 1984-04-23
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Granted: 1985-11-05
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Expires: 2004-04-23
Abstract
Abstract A circuit for use in a power supply of the type which regulates the voltage at a load remotely connected to the output of the supply. The circuit allows the voltage at the load to be sensed so that the voltage control loop of the supply can control the load voltage in a relatively accurate manner. The circuit also provides means to detect the breakage of any one of the sense leads.
Inventors
- 👤 Neil A. Kammiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/02; G01R17/06; G01R31/00; G01R31/50; G01R31/52; G01R31/54; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/56; G05F1/565; Y; Y10; Y10S; Y10S323/00; Y10S323/909
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
A circuit for sensing a break in at least one of a pair of sense leads in a power supply of the type which regulates the voltage at a remotely located load connected to said supply at its pair of output terminals said sense leads being connected to sense the voltage at said load, said circuit comprising: (a) current source means connected to said sense leads to provide a current of predetermined polarity thereon; (b) first detector means connected between one of said sense leads and one of said output terminals for generating a signal when said one sense lead is broken; and (c) second detector means connected between the other of said sense leads and the other of said output terminals for generating a signal when said other sense lead is broken.
Claim 2
Dependent Claim
133 words
A circuit for sensing a break in at least one of a pair of sense leads in a power supply of the type which regulates the voltage at a remotely located load connected to said supply at its pair of output terminals said sense leads being connected to sense the voltage at said load, said circuit comprising: (a) current source means connected to said sense leads to provide a current of predetermined polarity thereon; (b) first detector means connected between one of said sense leads and one of said output terminals for generating a signal when said one sense lead is broken; and (c) second detector means connected between the other of said sense leads and the other of said output terminals for generating a signal when said other sense lead is broken.
Claim 3
Dependent Claim
23 words
The circuit of claim 1 wherein said current source means is a single source of current connected between said pair of sense leads.
Claim 4
Dependent Claim
62 words
The circuit of claim 1 wherein said current source means comprises a first current source connected between one of said sense leads and one of said output terminals and a second current source connected between the other of said sense leads and the other of said output terminals each of said current sources having the same polarity as said current source means.
Claim 5
Dependent Claim
47 words
The circuit of claim 1 wherein said first detector means includes a first comparator means connected between said one sense lead and said one output terminal and said second detector means includes a second comparator means connected between said other sense lead and said other output terminal.
Claim 6
Dependent Claim
48 words
The circuit of claim 1 wherein said first and second detector means each have outputs which are interconnected so that either of said signals generated by said first and second detector means may be used to provide a signal to a suitably arranged alarm indicative of lead breakage.
Claim 7
Dependent Claim
48 words
The circuit of claim 4 wherein said first and second detector means each have outputs which are interconnected so that either of said signals generated by said first and second detector means may be used to provide a signal to a suitably arranged alarm indicative of lead breakage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-04 | 1989-05-06 | 1989-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-04 | 1993-05-06 | 1993-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-04 | 1997-05-06 | 1997-11-05 | $7700.00 | Window Closed / Lapsed |