Patent US3611210A successfully refreshed from Google Patents.
US3611210A
Expired / Lapsed
US
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Sectionalized pulse modulator
Assignee: LTV LING ALTEC Inc
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Filing: 1970-06-11
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Granted: 1971-10-05
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Expires: 1990-06-11
Abstract
Abstract A solid-state pulse modulator for producing power pulses, the duration of which pulses may be selected by charging one or more of a plurality of series-connected pulse-forming networks (PFN). Desired rectangular pulse shape for each duration of the pulses is retained by dividing the capacitance of the terminating capacitor of each PFN into a basic value that remains connected to the PFN and into a larger terminating value that is charged through a diode when the terminating capacitor is included in the PFN, but which is blocked from receiving a charge by the same diode when there is another PFN following the first one, for the purpose of obtaining pulses of longer duration. Selectively triggerable SCRs that determine pulse duration are connected to each PFN for charging an appropriate number of sections of PFN.
Inventors
- 👤 Charles Theodore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:48
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
An electrical variable pulse-width pulse-modulator comprising: a. charging means including a reactor, b. plural chargable series-connected pulse-forming networks, each having a terminating capacitor, c. plural triggerable solid state means connected from said reactor to each said terminating capacitor, d. a load connected to a first of said networks at the end opposite to the terminating capacitor thereof, e. first unilateral conductive means connected to the terminating capacitor of said first network, f. a basic terminating capacitor connected in shunt to both said first unilateral conductive means and said terminating capacitor of said first network, and g. second unilateral conductive means connected in opposite polarity to said first unilateral means and to a second said network, whereby said terminating capacitor of said first network is charged when only said first network is charged, and is not charged when more networks than said first network are also charged.
Claim 2
Dependent Claim
146 words
An electrical variable pulse-width pulse-modulator comprising: a. charging means including a reactor, b. plural chargable series-connected pulse-forming networks, each having a terminating capacitor, c. plural triggerable solid state means connected from said reactor to each said terminating capacitor, d. a load connected to a first of said networks at the end opposite to the terminating capacitor thereof, e. first unilateral conductive means connected to the terminating capacitor of said first network, f. a basic terminating capacitor connected in shunt to both said first unilateral conductive means and said terminating capacitor of said first network, and g. second unilateral conductive means connected in opposite polarity to said first unilateral means and to a second said network, whereby said terminating capacitor of said first network is charged when only said first network is charged, and is not charged when more networks than said first network are also charged.
Claim 3
Dependent Claim
29 words
The modulator of claim 1 in which; a. said first unilateral conductive means is a diode connected with the anode thereof to said terminating capacitor of said first network.
Claim 4
Dependent Claim
30 words
The modulator of claim 1 in which; a. said second unilateral conductive means is a diode connected with the cathode thereof to said basic terminating capacitor of saId first network.
Claim 5
Dependent Claim
40 words
The modulator of claim 1 in which; a. said pulse-forming network has plural inductors, and b. the inductor connected to said basic terminating capacitor has an inductance of the order of half the inductance of the inductor adjacent to it.
Claim 6
Dependent Claim
50 words
The modulator of claim 1 which includes; a. a third series-connected pulse-forming network, b. a third unilateral conductive means connected to the terminating capacitor of the second network, and c. a fourth unilateral conductive means connected in opposite polarity to said third unilateral conductive means and to said third network.
Claim 7
Dependent Claim
27 words
The modulator of claim 1 in which; a. said basic terminating capacitor has a smaller capacitance than the capacitance of said terminating capacitor of said first network.
Claim 8
Dependent Claim
23 words
The modulator of claim 4 in which; a. said smaller capacitance is of the order of half the capacitance of said terminating capacitor.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |