US3590279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pulse-width pulse-modulator
Assignee: LTV LING ALTEC Inc
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Filing: 1970-02-24
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Granted: 1971-06-29
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Expires: 1990-02-24
Abstract
Abstract A solid-state pulse-modulator for producing power output pulses from a source of direct current, the width (duration) of which can be varied on a pulse-to-pulse basis within a given range. This modulator does not employ mechanical switches, such as are normally required for variable pulse-width, high-voltage pulsemodulators. More specifically, a group of parallel-connectable resonant-chargeable networks is provided, each including a capacitor and an inductor. A predetermined number of the chargeable networks are charged by gating into conduction one or more silicon-controlled rectifiers located in the charging path. Still another silicon-controlled rectifier is gated into conduction to discharge all of the charged chargeable networks, to produce an output pulse having a pulse-width proportional to the number of chargeable networks that are so charged and discharged.
Inventors
- 👤 Bobby J Thompson
- 👤 Eugene T Perusse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:58
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57; H03K7/00; H03K7/08
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
178 words
An electrical variable pulse-width pulse-modulator comprising: a. charging means, including a supply of direct-current electrical energy; b. a plurality of parallel-connectable chargeable means for storing electrical energy; c. at least two first means connected to the charging means for applying direct-current energy to selected ones of the parallel-connectable chargeable means upon the application of an electrical control signal to said first means; d. a plurality of disconnect means individually interspersed between adjacent ones of the chargeable means for electrically and unidirectionally isolating one chargeable means from adjacent chargeable means; e. an electrical load to which an output pulse is to be applied; f. second means connected to the load and to the chargeable means for discharging the chargeable means into the load upon the application of an electrical switching signal to said second means; g. control means for providing an electrical control signal to at least one preselected said first means to thereby charge a preselected number of said chargeable means; and h. pulse means for triggering said second means to generate an output pulse from said modulator.
Claim 2
Dependent Claim
178 words
An electrical variable pulse-width pulse-modulator comprising: a. charging means, including a supply of direct-current electrical energy; b. a plurality of parallel-connectable chargeable means for storing electrical energy; c. at least two first means connected to the charging means for applying direct-current energy to selected ones of the parallel-connectable chargeable means upon the application of an electrical control signal to said first means; d. a plurality of disconnect means individually interspersed between adjacent ones of the chargeable means for electrically and unidirectionally isolating one chargeable means from adjacent chargeable means; e. an electrical load to which an output pulse is to be applied; f. second means connected to the load and to the chargeable means for discharging the chargeable means into the load upon the application of an electrical switching signal to said second means; g. control means for providing an electrical control signal to at least one preselected said first means to thereby charge a preselected number of said chargeable means; and h. pulse means for triggering said second means to generate an output pulse from said modulator.
Claim 3
Dependent Claim
21 words
The electrical variable pulse-width pulse-modulator of claim 1, in which; a. each said first means is a triggerable electrically conductive device.
Claim 4
Dependent Claim
20 words
The electrical variable pulse-width pulse-modulator of claim 2, in which; a. each said first means is a silicon controlled rectifier.
Claim 5
Dependent Claim
18 words
The electrical variable pulse-width pulse-modulator of claim 1, in which; a. each said disconnect means is a diode.
Claim 6
Dependent Claim
32 words
The electrical variable pulse-width pulse-modulator of claim 1, in which; a. said second means is a triggerable electrically conductive device having a greater current-carrying capacity than that of a said first means.
Claim 7
Dependent Claim
51 words
The electrical variable pulse-width pulse-modulator of claim 1, which additionally includes: a. at least two transformers, each having a primary and a secondary; b. a connection from each primary to said control means, and c. a connection from each secondary to a first means to apply said electrical control signal thereto.
Claim 8
Dependent Claim
23 words
The electrical variable pulse-width pulse-modulator of claim 1, which additionally inCludes; a. an output transformer connected between said second means and said load.
Claim 9
Dependent Claim
24 words
The electrical variable pulse-width pulse-modulator of claim 1, in which; a. each of said plurality of chargeable means includes an inductor and a capacitor.
Claim 10
Dependent Claim
27 words
The electrical variable pulse-width pulse-modulator of claim 8, in which; a. the inductor and the disconnect means are connected adjacently in series with respect to said capacitor.
Claim 11
Dependent Claim
73 words
The electrical variable pulse-width pulse-modulator of claim 1, in which; a. only one said first means is connected to said charging means, b. further said first means are connected to said one first means, and c. further control means for providing an electrical control signal to at least one preselected further said first means at the same time that said control means provides said electrical control signal to said only one first means.
Claim 12
Dependent Claim
34 words
The electrical variable pulse-width pulse-modulator of claim 10, in which; a. the further said first means are connected in series with said one first means oppositely from the connection thereof to said charging means.
Claim 13
Dependent Claim
44 words
The electrical variable pulse-width pulse-modulator of claim 8, in which; a. one first means and one disconnect means are connected in parallel, and b. that parallel combination is connected in series between the inductor and capacitor for each of said plurality of chargeable means.
Claim 14
Dependent Claim
48 words
The electrical variable pulse-width pulse-modulator of claim 8, in which; a. one first means and one disconnect means are connected in parallel, and b. that parallel combination is connected to the capacitor oppositely to the connection of the inductor thereto, for each of said plurality of chargeable means.
Claim 15
Dependent Claim
63 words
The electrical variable pulse-width pulse-modulator of claim 1 in which said control means comprises; a. a source of voltage, b. multiple switching means, connected to the source of voltage, and c. a connection from the multiple switching means to each said first means for maintaining a conductive status thereof to allow charging of selected chargeable means upon the occurrence of a control pulse.
Claim 16
Dependent Claim
65 words
The electrical variable pulse-width pulse-modulator of claim 1, in which said control means comprises; a. plural sources of voltage, b. plural switching means, individually connected to one of said plural sources of voltage, and c. a connection from one switching means to one said first means for maintaining conductive status thereof to allow charging of selected chargeable means upon the occurrence of a control pulse.
Claim 17
Dependent Claim
101 words
The electrical variable pulse-width pulse-modulator of claim 1, in which said control means comprises; a. plural pulse transformers each having a primary and a secondary, b. plural switching means, individually connected to one of said plural pulse transformers, c. a connection from each said secondary to one of said first means for the control thereof, d. a source of control pulses, and e. connections from said source of control pulses to each pulse transformer primary for supplying a pulse thereto at the same time that a control pulse is supplied to the first means which passes current to further first means.
References Cited (Backward Citations)
US3168701A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |