US3602839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inverter including complementary transistors
Assignee: RCA Corp
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Filing: 1970-03-30
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Granted: 1971-08-31
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Expires: 1990-03-30
Abstract
Abstract Inverters including complementary transistors and single ended or center tapped sources of current supply.
Inventors
- 👤 Wallace D Williams
- 👤 Douglas A Moe
- 👤 Carl R Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:09
CPC Classifications
H; H02; H02M; H02M7/00; H02M7/42; H02M7/44; H02M7/48; H02M7/53; H02M7/537; H02M7/5383
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
An inverter circuit comprising: a pair of transistors of complementary type, each characterized by collector, emitter and base electrodes; a pair of input terminals adapted for connection to a source of DC potential; a first bias circuit coupling the base of one transistor and one input terminal, a second bias circuit coupling the base of the other transistor and the other input terminal; means for connecting in a series circuit the emitter to collector paths of said transistors between said pair of input terminals; and a saturable core transformer having a primary winding and a secondary winding, said primary winding being signal driven from a point on said series circuit between the emitter to collector paths of said transistors, said secondary winding being transformer coupled to said primary winding and having one end thereof connected in circuit with said point on said series circuit, said secondary winding being further connected on the other end thereof in circuit with the base electrodes of said transistors.
Claim 2
Dependent Claim
164 words
An inverter circuit comprising: a pair of transistors of complementary type, each characterized by collector, emitter and base electrodes; a pair of input terminals adapted for connection to a source of DC potential; a first bias circuit coupling the base of one transistor and one input terminal, a second bias circuit coupling the base of the other transistor and the other input terminal; means for connecting in a series circuit the emitter to collector paths of said transistors between said pair of input terminals; and a saturable core transformer having a primary winding and a secondary winding, said primary winding being signal driven from a point on said series circuit between the emitter to collector paths of said transistors, said secondary winding being transformer coupled to said primary winding and having one end thereof connected in circuit with said point on said series circuit, said secondary winding being further connected on the other end thereof in circuit with the base electrodes of said transistors.
Claim 3
Dependent Claim
38 words
An inverter circuit according to claim 1 wherein said base electrodes are ohmicly connected together so that variations of potential on one of said base electrodes is accompanied by corresponding variations on the other of said base electrodes.
Claim 4
Dependent Claim
48 words
An inverter circuit according to claim 1 further comprising a potentiometer connected between said input terminals, said base electrodes being connected to spaced points on said potentiometer, said circuit connection between said secondary winding and said base electrode of each of said transistors including portions of said potentiometer.
Claim 5
Dependent Claim
21 words
An inverter circuit according to claim 1 wherein said transformer further comprises an output winding adapted for connection to a load.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |