US3829755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sequencer for a multiple switching regulator
Assignee: Bull HN Information Systems Italia SpA
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Filing: 1973-04-05
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Granted: 1974-08-13
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Expires: 1993-04-05
Abstract
Abstract The sequencer employs a variable current source, a Schmidt trigger circuit, a one-shot, a pair of master-slave flip-flops and logic gates to provide pulses for operating a multiple switching regulator. A logic gate disables the sequencer to prevent the generation of pulses while a portion of the switching regulator is delivering current to an output terminal and thereby prevents possible damage to the switching regulator.
Inventors
- 👤 J Nowell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
H; H02; H02M; H02M3/00; H02M3/22; H02M3/24; H02M3/28; H02M3/305; H02M3/315; H02M3/3155
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
173 words
A sequencer for a switching regulator including a transformer having a primary winding and a secondary winding, said sequencer comprising: a source of current having a control lead and an output lead; a reference potential; a capacitor, said capacitor being connected between said potential and said output lead of said source of current; a Schmidt trigger circuit having an input lead and an output lead, said input lead of said trigger circuit being coupled to said output lead of said source of current; a first OR-gate having an output lead and first and second input leads, said first input lead of said first OR-gate being connected to said output lead of said trigger circuit, said second input lead of said first OR-gate being coupled to said secondary winding of said transformer; a diode, said diode being connected between said output lead of said source of current and said output lead of said first ORgate; and a sequencer output lead, said sequencer output lead being coupled to said output lead of said first OR-gate.
Claim 2
Dependent Claim
173 words
A sequencer for a switching regulator including a transformer having a primary winding and a secondary winding, said sequencer comprising: a source of current having a control lead and an output lead; a reference potential; a capacitor, said capacitor being connected between said potential and said output lead of said source of current; a Schmidt trigger circuit having an input lead and an output lead, said input lead of said trigger circuit being coupled to said output lead of said source of current; a first OR-gate having an output lead and first and second input leads, said first input lead of said first OR-gate being connected to said output lead of said trigger circuit, said second input lead of said first OR-gate being coupled to said secondary winding of said transformer; a diode, said diode being connected between said output lead of said source of current and said output lead of said first ORgate; and a sequencer output lead, said sequencer output lead being coupled to said output lead of said first OR-gate.
Claim 3
Dependent Claim
101 words
A sequencer for a switching regulator as defined in claim 1 including: a second OR-gate having an output lead and first and second input leads, said output lead of said second OR-gate being connected to said second input lead of said first OR-gate, said secondary winding of said transformer being coupled to said second input lead of said second OR-gate; and a one-shot having an input lead and an output lead, said input lead of said one-shot being connected to said sequencer output lead, said output lead of said one-shot being connected to said first input lead of said second OR-gate.
Claim 4
Dependent Claim
78 words
A sequencer for a switching regulator as defined in claim 1 including: a third OR-gate having an output lead and first and second input leads, said output lead of said OR-gate being connected to said output lead of said first OR-gate, said first input lead of said third OR-gate being connected to said output lead of said first OR-gate, said second input lead of said third OR-gate being connected to said first input lead of said first OR-gate.
Claim 5
Dependent Claim
157 words
A sequencer for a switching regulator as defined in claim 1 including: second and third OR-gates each having an output lead and first and second input leads, said output lead of said second OR-gate being connected to said second input lead of said first OR-gate, said secondary winding of said transformer being coupled to said second input lead of said second OR-gate, said output lead of said third OR-gate being connected to said output lead of said first OR-gate, said first input lead of said third OR-gate being connected to said output lead of said first OR-gate, said second input lead of said third OR-gate being connected to said first input lead of said first OR-gate; and a one-shot having an input lead and an output lead, said input lead of said one-shot being connected to said sequencer output lead, said output lead of said one-shot being connected to said first input lead of said second OR-gate.
Claim 6
Dependent Claim
364 words
A sequencer for a muLtiple switching regulator having a plurality of silicon controlled rectifiers and a plurality of transformers each having a primary winding and a secondary winding, said sequencer comprising: first and second master-slave flip-flops each having first, second and third input leads and first and second output leads, said first output lead of said first flip-flop being connected to said first input lead of said second flip-flop, said second output lead of said first flip-flop being connected to said third lead of said second flip-flop, said first output lead of said second flip-flop being connected to said third input lead of said first flip-flop, said second output lead of said second flip-flop being connected to said first input lead of said first flip-flop; a source of current having a control lead and an output lead; a reference potential; a signal-input terminal, said input terminal being connected to said control lead of said source of current; a capacitor, said capacitor being connected between said output lead of said source of current and said reference potential; a Schmidt trigger circuit having an input lead and an output, said input lead of said trigger circuit being coupled to said output lead of said source of current; a first OR-gate having an output lead and first and second input leads, said first input lead of said first OR-gate being connected to said output lead of said trigger circuit; a diode, said diode being connected between said output lead of said source of current and said output lead of said first OR-gate, said output lead of said first OR-gate being coupled to said second input leads of said first and said second flip-flops; and an AND-gate having an output lead and first, second and third input leads, said output lead of said AND-gate being coupled to said second input lead of said first OR-gate, said first input lead of said AND-gate being connected to said second output lead of said first flip-flop, said second input lead of said AND-gate being connected to said second output lead of said second flip-flop, said third input lead of said AND-gate being coupled to said secondary winding of a first transformer.
Claim 7
Dependent Claim
364 words
A sequencer for a muLtiple switching regulator having a plurality of silicon controlled rectifiers and a plurality of transformers each having a primary winding and a secondary winding, said sequencer comprising: first and second master-slave flip-flops each having first, second and third input leads and first and second output leads, said first output lead of said first flip-flop being connected to said first input lead of said second flip-flop, said second output lead of said first flip-flop being connected to said third lead of said second flip-flop, said first output lead of said second flip-flop being connected to said third input lead of said first flip-flop, said second output lead of said second flip-flop being connected to said first input lead of said first flip-flop; a source of current having a control lead and an output lead; a reference potential; a signal-input terminal, said input terminal being connected to said control lead of said source of current; a capacitor, said capacitor being connected between said output lead of said source of current and said reference potential; a Schmidt trigger circuit having an input lead and an output, said input lead of said trigger circuit being coupled to said output lead of said source of current; a first OR-gate having an output lead and first and second input leads, said first input lead of said first OR-gate being connected to said output lead of said trigger circuit; a diode, said diode being connected between said output lead of said source of current and said output lead of said first OR-gate, said output lead of said first OR-gate being coupled to said second input leads of said first and said second flip-flops; and an AND-gate having an output lead and first, second and third input leads, said output lead of said AND-gate being coupled to said second input lead of said first OR-gate, said first input lead of said AND-gate being connected to said second output lead of said first flip-flop, said second input lead of said AND-gate being connected to said second output lead of said second flip-flop, said third input lead of said AND-gate being coupled to said secondary winding of a first transformer.
Claim 8
Dependent Claim
106 words
A sequencer for a multiple switching regulator as defined in claim 5 including: a second OR-gate having an output lead and first and second input leads, said output lead of said second OR-gate being connected to said second input lead of said first OR-gate, said second input lead of said second OR-gate being connected to said output lead of said AND-gate; and a one-shot having an input lead and an output lead, said input lead of said one-shot being connected to said second input lead of said first flip-flop, said output lead of said one-shot being connected to said first input lead of said second OR-gate.
Claim 9
Dependent Claim
80 words
A sequencer for a multiple switching regulator as defined in claim 5 including: a third OR-gate having an output lead and first and second input leads, said output lead of said third OR-gate being connected to said output lead of said first OR-gate, said first input lead of said third OR-gate being connected to said output lead of said first OR-gate, said second input lead of said third OR-gate being connected to said first input lead of said first OR-gate.
Claim 10
Dependent Claim
161 words
A sequencer for a multiple switching regulator as defined in claim 5 including: second and third OR-gates each having an output lead and first and second input leads, said output lead of said second OR-gate being connected to said second input lead of said first OR-gate, said second input lead of said second OR-gate being connected to said output lead of said AND-gate, said output lead of said third OR-gate being connected to said output lead of said first OR-gate, said first input lead of said third OR-gate connected to said output lead of said first OR-gate, said second input lead of said third OR-gate being connected to said first input lead of said first OR-gate; and a one-shot having an input lead and an output lead, said input lead of said one-shot being connected to said second input lead of said first flip-flop, said output lead of said one-shot being connected to said first input lead of said second OR-gate.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |