Patent US3582801A successfully refreshed from Google Patents.
US3582801A
Expired / Lapsed
US
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Voltage amplifying circuit
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1969-04-10
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Granted: 1971-06-01
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Expires: 1989-04-10
Abstract
Abstract A circuit which includes a pulse transformer provides an amplified output voltage. A feedback loop utilizes a bootstrapping technique to establish a transformer secondary coil reference potential which is a function of the circuit output voltage. The amplified circuit output effectively increases a typical turns-ratio of 5 to an effective value of 50.
Inventors
- 👤 David O Hansen
- 👤 Neal L Roy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:47
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
An electric circuit for amplifying an input voltage pulse comprising: a. an impedance element across which a signal voltage may be impressed; b. a transistor connected as an emitter follower so as to have a low output impedance and having its base connected to one terminal of said impedance element; c. signal output means connected directly between the emitter electrode of said transistor and a fixed reference potential for defining a circuit output signal; and d. a voltage divider coupled between a fixed reference potential and the emitter electrode of said transistor and having an intermediate point connected to the other terminal of said impedance element.
Claim 2
Dependent Claim
106 words
An electric circuit for amplifying an input voltage pulse comprising: a. an impedance element across which a signal voltage may be impressed; b. a transistor connected as an emitter follower so as to have a low output impedance and having its base connected to one terminal of said impedance element; c. signal output means connected directly between the emitter electrode of said transistor and a fixed reference potential for defining a circuit output signal; and d. a voltage divider coupled between a fixed reference potential and the emitter electrode of said transistor and having an intermediate point connected to the other terminal of said impedance element.
Claim 3
Dependent Claim
36 words
The electric circuit of claim 1 wherein said impedance element comprises the secondary inductor of a transformer and the circuit further includes a capacitor connected between the emitter electrode of said transistor and said voltage divider.
Claim 4
Dependent Claim
13 words
The electric circuit of claim 2 wherein said voltage divider comprises a potentiometer.
Claim 5
Dependent Claim
113 words
An electric circuit for amplifying an input voltage pulse comprising: a. a pulse transformer having a primary and secondary inductor; b. a transistor connected as an emitter follower and having the base electrode directly coupled to one terminal of the secondary inductor of said pulse transformer and the emitter terminal coupled to a fixed reference potential; c. a direct current blocking capacitor having one terminal connected to the emitter electrode of said transistor; and d. a voltage divider coupled between said capacitor and a fixed reference potential, said voltage divider having an intermediate point connected to the other terminal of the secondary inductor thereby impressing a portion of the output voltage signal thereon.
Claim 6
Dependent Claim
113 words
An electric circuit for amplifying an input voltage pulse comprising: a. a pulse transformer having a primary and secondary inductor; b. a transistor connected as an emitter follower and having the base electrode directly coupled to one terminal of the secondary inductor of said pulse transformer and the emitter terminal coupled to a fixed reference potential; c. a direct current blocking capacitor having one terminal connected to the emitter electrode of said transistor; and d. a voltage divider coupled between said capacitor and a fixed reference potential, said voltage divider having an intermediate point connected to the other terminal of the secondary inductor thereby impressing a portion of the output voltage signal thereon.
Claim 7
Dependent Claim
92 words
In an electric circuit of the type which includes a pulse transformer having a secondary inductor, the improvement comprising: a. a transistor connected as an emitter follower so as to have a low output impedance and having its base directly connected to one terminal of the secondary inductor; b. a capacitor directly coupled to the emitter terminal of said transistor for bLocking direct current signals; and c. a voltage divider connected between said capacitor and a fixed reference potential, said voltage divider having an intermediate point connected to the transformer secondary inductor.
Claim 8
Dependent Claim
92 words
In an electric circuit of the type which includes a pulse transformer having a secondary inductor, the improvement comprising: a. a transistor connected as an emitter follower so as to have a low output impedance and having its base directly connected to one terminal of the secondary inductor; b. a capacitor directly coupled to the emitter terminal of said transistor for bLocking direct current signals; and c. a voltage divider connected between said capacitor and a fixed reference potential, said voltage divider having an intermediate point connected to the transformer secondary inductor.
Claim 9
Dependent Claim
42 words
The electric circuit of claim 5 wherein said circuit further includes a feedback transistor connected as an emitter follower and having the base electrode connected to said voltage divider intermediate point and having the emitter electrode connected to the transformer secondary inductor.
Claim 10
Dependent Claim
19 words
The electric circuit of claim 5 wherein said voltage divider is a potentiometer whereby the circuit amplification is variable.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |