Patent US3578986A successfully refreshed from Google Patents.
US3578986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stacked pulse-forming network switching circuit
Assignee: General Electric Co
•
Filing: 1968-08-21
•
Granted: 1971-05-18
•
Expires: 1988-08-21
Abstract
Abstract A multiple element switching circuit, including a plurality of controlled unilateral conductive elements such as silicon controlled rectifiers, for connection across a charged pulsegenerating circuit and a load in a pulse generator. The switching circuit includes a plurality of SCRs which are each connected in shunt across one of a plurality of serially connected pulseforming networks. When the SCRs are gated, each pulse-forming network is short circuited. The short-circuited pulse-forming networks provide a step voltage to switch the pulse voltage connected thereacross while providing isolation between each of the conductive elements.
Inventors
- 👤 August L Mcguffin
- 👤 Ralph M Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:09
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/505; H02M7/515; H02M7/523
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
129 words
An electrical switching circuit for connection across a charged pulse-generating circuit and a load in a pulse generator, said pulsE generator including a direct current charging source connected to said pulse-generating circuit and a trigger generator, comprising in combination: a. a plurality of serially connected pulse-forming energystorage networks having a series discharge path; b. means connecting said pulse-forming energy-storage networks to said source for charging therefrom; and c. a plurality of controlled unilateral conductive elements connected to said trigger generator so as to be gated thereby, one controlled unilateral conductive element connected in shunt across each of said pulse-forming energy-storage networks and connected such that each of said unilateral conductive elements is isolated from the series discharge path by one of said pulse-forming energy-storage networks during a switching operation.
Claim 2
Dependent Claim
129 words
An electrical switching circuit for connection across a charged pulse-generating circuit and a load in a pulse generator, said pulsE generator including a direct current charging source connected to said pulse-generating circuit and a trigger generator, comprising in combination: a. a plurality of serially connected pulse-forming energystorage networks having a series discharge path; b. means connecting said pulse-forming energy-storage networks to said source for charging therefrom; and c. a plurality of controlled unilateral conductive elements connected to said trigger generator so as to be gated thereby, one controlled unilateral conductive element connected in shunt across each of said pulse-forming energy-storage networks and connected such that each of said unilateral conductive elements is isolated from the series discharge path by one of said pulse-forming energy-storage networks during a switching operation.
Claim 3
Dependent Claim
31 words
A switching circuit as defined in claim 1 in which each of said pulse-forming energy-storage networks comprises a delay network, consisting of the same number of series-connected inductors and parallel-connected capacitors.
Claim 4
Dependent Claim
42 words
A switching circuit as defined in claim 2 in which each of said capacitors comprising said pulse-forming energy-storage networks are of equal value, and in which each of said inductors included in each of said pulse-forming energy-storage networks are of equal value.
Claim 5
Dependent Claim
23 words
An electrical switching circuit as defined in claim 3 in which each of said controlled unilateral conductive elements comprises a silicon controlled rectifier.
Claim 6
Dependent Claim
25 words
A switching circuit as defined in claim 3 in which each of said controlled unilateral conductive elements comprises first and second series-connected silicon controlled rectifiers.
Claim 7
Dependent Claim
141 words
An electrical switching circuit for connection across a charged pulse-generating circuit and a load in a pulse generator, said pulse generator further comprising a direct current charging source connected to said pulse-generating circuit and a trigger generator, comprising in combination: a. a plurality of serially connected pulse-forming energy-storage networks having a series discharge path, each pulse-forming energy-storage network comprising first and second parallel-connected delay networks: b. means for connecting said pulse-forming energy-storage networks to said source for charging therefrom; and c. a plurality of controlled unilateral conductive elements connected to said trigger generator so as to be gated thereby, one unilateral controlled conductive element connected in shunt across each of said delay networks and connected such that each of said unilateral conductive elements is isolated from the series discharge path by one of said pulse-forming energy-storage networks during a switching operation.
Claim 8
Dependent Claim
141 words
An electrical switching circuit for connection across a charged pulse-generating circuit and a load in a pulse generator, said pulse generator further comprising a direct current charging source connected to said pulse-generating circuit and a trigger generator, comprising in combination: a. a plurality of serially connected pulse-forming energy-storage networks having a series discharge path, each pulse-forming energy-storage network comprising first and second parallel-connected delay networks: b. means for connecting said pulse-forming energy-storage networks to said source for charging therefrom; and c. a plurality of controlled unilateral conductive elements connected to said trigger generator so as to be gated thereby, one unilateral controlled conductive element connected in shunt across each of said delay networks and connected such that each of said unilateral conductive elements is isolated from the series discharge path by one of said pulse-forming energy-storage networks during a switching operation.
Claim 9
Dependent Claim
22 words
A switching circuit as defined in claim 6 in which each of said controlled unilateral conductive elements comprises a silicon controlled rectifier.
Claim 10
Dependent Claim
38 words
A switching circuit as defined in claim 7 in which each delay network comprises an equal number of inductors and capacitors, each of said inductors are of equal value, and each of said capacitors are of equal value.
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |