Patent US3805145A successfully refreshed from Google Patents.
US3805145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operational amplifier stabilized power supply
Assignee: Gordon Engineering Co
•
Filing: 1971-04-12
•
Granted: 1974-04-16
•
Expires: 1991-04-12
Abstract
Abstract A voltage source for generating precision reference signals includes a pair of differential input operational amplifiers serially connected in stages. One input terminal and the output terminal of each operational amplifier are resistively connected, the voltage appearing at the output terminal of each operational amplifier being stabilized by the stability factor of the operational amplifier. A stabilized voltage at the output terminal of each stage is applied to the other input terminal of the other stage.
Inventors
- 👤 B Gordon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:31
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/46; G05F1/461; H; H03; H03M; H03M1/00; H03M1/12; H03M1/34; H03M1/38; H03M1/42; H03M1/66; H03M1/74; H03M1/76
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
199 words
A device for generating a stable output signal, said device comprising: a. an input terminal for receiving an input signal; b. first operational amplifier means having first and second input terminals and an output terminal, said input terminal operatively connected to said first operational amplifier means first input terminal; c. first resistor means operatively connected between said first operational amplifier means second input terminal and output terminal for stabilizing a signal at said first operational amplifier means output terminal; d. second operational amplifier means having first and second input terminals and output terminal, said first operational amplifier means output terminal operatively connected to said second operational amplifier means first input terminal; e. second resistor means operatively connected between said second operational amplifier means second input terminal and output terminal for stabilizing a signal at said second operational amplifier means output terminal; and f. third resistor means operatively connected between said second operational amplifier means output terminal and said first operational amplifier means first input terminal for stabilizing said signal at said first operational amplifier means first input terminal, said stable output signal presented said second operational means output terminal being stabilized by said first and second operational amplifier means.
Claim 2
Independent Claim
199 words
A device for generating a stable output signal, said device comprising: a. an input terminal for receiving an input signal; b. first operational amplifier means having first and second input terminals and an output terminal, said input terminal operatively connected to said first operational amplifier means first input terminal; c. first resistor means operatively connected between said first operational amplifier means second input terminal and output terminal for stabilizing a signal at said first operational amplifier means output terminal; d. second operational amplifier means having first and second input terminals and output terminal, said first operational amplifier means output terminal operatively connected to said second operational amplifier means first input terminal; e. second resistor means operatively connected between said second operational amplifier means second input terminal and output terminal for stabilizing a signal at said second operational amplifier means output terminal; and f. third resistor means operatively connected between said second operational amplifier means output terminal and said first operational amplifier means first input terminal for stabilizing said signal at said first operational amplifier means first input terminal, said stable output signal presented said second operational means output terminal being stabilized by said first and second operational amplifier means.
Claim 3
Dependent Claim
80 words
The device as claimed in claim 1 including reference means operatively connected Between said first operational amplifier means first input terminal and a return for maintaining said signal at said first operational amplifier means first input terminal at a constant level, said signal applied to said second operational amplifier means first input terminal stabilized by said first operational amplifier means and said signal applied to said first operational amplifier means first input terminal stabilized by said second operational amplifier means.
Claim 4
Independent Claim
257 words
A device for generating a stable voltage, said device comprising: a. an input terminal for receiving an input voltage signal; b. first operational amplifier means having at least first and second input terminals and an output terminal, said first operational amplifier means first input terminal operatively connected to said input terminal, said input voltage signal applied to said first operational amplifier means first input terminal, said first operational amplifier means output terminal resistively connected to said first operational amplifier means second input terminal, a first signal presented at said first operational amplifier means output terminal being related to said input voltage signal and stabilized by said first operational amplifier means; c. second operational amplifier means having at least first and second input terminals and output terminal, said second operational amplifier means first input terminal operatively connected to said first operational amplifier means output terminal, said first signal applied to said second operational amplifier first input terminal, said second operational amplifier output terminal resistively connected to said second operational amplifier means second input terminal, a second signal presented at said second operational amplifier means output terminal being related to said first signal and stabilized by said second operational amplifier means; d. resistor means operatively connected between said second operational amplifier means output terminal and said first operational amplifier means first input terminal, said second signal applied to said first operational amplifier means first input terminal via said resistor means, said second signal being a stable voltage signal which is stabilized by said first and second operational amplifier means.
Claim 5
Independent Claim
257 words
A device for generating a stable voltage, said device comprising: a. an input terminal for receiving an input voltage signal; b. first operational amplifier means having at least first and second input terminals and an output terminal, said first operational amplifier means first input terminal operatively connected to said input terminal, said input voltage signal applied to said first operational amplifier means first input terminal, said first operational amplifier means output terminal resistively connected to said first operational amplifier means second input terminal, a first signal presented at said first operational amplifier means output terminal being related to said input voltage signal and stabilized by said first operational amplifier means; c. second operational amplifier means having at least first and second input terminals and output terminal, said second operational amplifier means first input terminal operatively connected to said first operational amplifier means output terminal, said first signal applied to said second operational amplifier first input terminal, said second operational amplifier output terminal resistively connected to said second operational amplifier means second input terminal, a second signal presented at said second operational amplifier means output terminal being related to said first signal and stabilized by said second operational amplifier means; d. resistor means operatively connected between said second operational amplifier means output terminal and said first operational amplifier means first input terminal, said second signal applied to said first operational amplifier means first input terminal via said resistor means, said second signal being a stable voltage signal which is stabilized by said first and second operational amplifier means.
Claim 6
Dependent Claim
46 words
The device as claimed in claim 3 including reference voltage component means operatively connected between said first operational amplifier means first input terminal and a return for maintaining said input voltage signal as at said first operational amplifier means first input terminal at a constant level.
References Cited (Backward Citations)
US3133242A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |