US3832536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrator circuit
Assignee: Alcatel CIT SA
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Filing: 1972-09-27
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Granted: 1974-08-27
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Expires: 1992-09-27
Abstract
Abstract Integrator comprising an operational amplifier having an input (E1)(-) and an input (E2)(+), and an output (S), with a resistance having a value of (R1) connected up between the input (E2) and the earth, a capacitor shunted by a resistor having an ohmic value of (R2) between the output (S) and the ihput (E1), the input voltage being applied to the input (E1) through a resistor having a value of R1), characterized in that the output (S) is connected up to the input (E2) by a network comprising two diodes connected up head to tail in parallel, in series with a resistor having an ohmic value equal to (R2).
Inventors
- 👤 Dily C Le
- 👤 D Lajotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:10
CPC Classifications
G; G06; G06G; G06G7/00; G06G7/12; G06G7/18; G06G7/184; G06G7/186; G06G7/25
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
112 words
An integrator comprising an operational amplifier having a first iNput, a second input and an output, a first resistor having a value R1 connected between said second input and ground, a capacitor shunted by a second resistor having a value of R2 connected between said output and said first input, the input voltage being applied to said first input through a third resistor having a value of R1, characterized in that said output is connected to said second input by a network comprising a diode combination including first and second diodes connected back-toback in parallel, said diode combination being connected in series with a fourth resistor having a value equal to R2.
Claim 2
Dependent Claim
112 words
An integrator comprising an operational amplifier having a first iNput, a second input and an output, a first resistor having a value R1 connected between said second input and ground, a capacitor shunted by a second resistor having a value of R2 connected between said output and said first input, the input voltage being applied to said first input through a third resistor having a value of R1, characterized in that said output is connected to said second input by a network comprising a diode combination including first and second diodes connected back-toback in parallel, said diode combination being connected in series with a fourth resistor having a value equal to R2.
Claim 3
Dependent Claim
89 words
An integrator comprising an operational amplifier having a first input, a second input and an output, a first resistor connected between said second input and ground, a first feedback combination including a capacitor shunted by a second resistor connected between said output and said first input, a third resistor having the same value as said first resistor connected to said first input, and a second feedback combination including diode means connected between said output and said second input for controlling the gain of the amplifier at low input frequencies.
Claim 4
Dependent Claim
89 words
An integrator comprising an operational amplifier having a first input, a second input and an output, a first resistor connected between said second input and ground, a first feedback combination including a capacitor shunted by a second resistor connected between said output and said first input, a third resistor having the same value as said first resistor connected to said first input, and a second feedback combination including diode means connected between said output and said second input for controlling the gain of the amplifier at low input frequencies.
Claim 5
Dependent Claim
20 words
An integrator as defined in claim 2 wherein said diode means includes first and second diodes connected back-to-back in parallel.
Claim 6
Dependent Claim
33 words
An integrator as defined in claim 3 wherein said second feedback combination includes a fourth resistor having the same value as said second resistor connected in series with said first and second diodes.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-26 | 1978-02-25 | 1978-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-26 | 1982-02-25 | 1982-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-26 | 1986-02-25 | 1986-08-27 | $7700.00 | Window Closed / Lapsed |