US3665250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Overload current suppression circuit network
Assignee: Raytheon Co
•
Filing: 1970-05-19
•
Granted: 1972-05-23
•
Expires: 1990-05-19
Abstract
Abstract A circuit network adapted for interconnection between the electron gun of a cathode ray tube and the intensity coupler therefor for the purpose of suppressing resultant overload currents caused when arcing occurs within the tube in a path originating at the tube''s anode. A significant feature of the network is its ability to provide protection against serious malfunctioning of related circuitry especially overload current sensitive microcircuitry. The network greatly limits both the achievable levels of overload currents and rate of change thereof with attendant benefits.
Inventors
- 👤 Walter D Bales
- 👤 Neal H Cosand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:22
CPC Classifications
H; H02; H02H; H02H7/00; H02H7/20; H04; H04N; H04N3/00; H04N3/10; H04N3/16; H04N3/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
259 words
A current suppression circuit network having input, output, and reference terminals and comprising: first, second, third and fourth circuit branches each including at least one resistor and each respectively being connected between first, second, third and fourth pairs of input and output terminals; fifth and sixth circuit branches each including an inductor and each respectively being connected between fifth and sixth pairs of input and output terminals; first, second, and third zener diodes each having an anode and a cathode, said first zener diode having its anode connected to a reference terminal and its cathode connected to the input terminal of said first terminal pair, said second zener diode having its anode connected to the output terminal of said first terminal pair and its cathode connected to the output terminal of said fourth terminal pair, said third zener diode having its anode connected to the output terminal of said fourth terminal pair and its cathode connected to the output terminal of said second terminal pair; and first, second, third, fourth, and fifth capacitors, said first capacitor being connected between a point on said second circuit branch and said reference terminal, said second capacitor being connected between a point on said third circuit branch and said reference terminal, said third capacitor being connected between a point on said fourth circuit branch and said reference terminal, said fourth capacitor being connected between a point on said fifth circuit branch and said reference terminal, and said fifth capacitor being connected between a point on said sixth circuit branch and said reference terminal.
Claim 2
Dependent Claim
259 words
A current suppression circuit network having input, output, and reference terminals and comprising: first, second, third and fourth circuit branches each including at least one resistor and each respectively being connected between first, second, third and fourth pairs of input and output terminals; fifth and sixth circuit branches each including an inductor and each respectively being connected between fifth and sixth pairs of input and output terminals; first, second, and third zener diodes each having an anode and a cathode, said first zener diode having its anode connected to a reference terminal and its cathode connected to the input terminal of said first terminal pair, said second zener diode having its anode connected to the output terminal of said first terminal pair and its cathode connected to the output terminal of said fourth terminal pair, said third zener diode having its anode connected to the output terminal of said fourth terminal pair and its cathode connected to the output terminal of said second terminal pair; and first, second, third, fourth, and fifth capacitors, said first capacitor being connected between a point on said second circuit branch and said reference terminal, said second capacitor being connected between a point on said third circuit branch and said reference terminal, said third capacitor being connected between a point on said fourth circuit branch and said reference terminal, said fourth capacitor being connected between a point on said fifth circuit branch and said reference terminal, and said fifth capacitor being connected between a point on said sixth circuit branch and said reference terminal.
Claim 3
Dependent Claim
351 words
A circuit network having six input terminals, a reference terminal, two circuit nodes, and further comprising: a first resistor connected between a first input and a first output terminal, a first zener diode having its cathode connected to said first input terminal and its anode connected to said reference terminal; a fifth and a second resistor, said fifth and second resistors being connected together at a first circuit node, said fifth resistor being further connected to a second input terminal and said second resistor being further connected to a second output terminal so that said fifth and second resistors are connected in seRies between said second input terminal and said second output terminal, a first capacitor connected between said second input terminal and said reference terminal, a second capacitor connected between said first circuit node and said reference terminal; a sixth and a third resistor, said sixth and third resistors being connected together at a second circuit node, said sixth resistor being further connected to a third input terminal and said third resistor being further connected to a third output terminal so that said sixth and third resistors are connected in series between said third input terminal and said third output terminal, a third capacitor connected between said third input terminal and said reference terminal, a fourth capacitor connected between said second circuit node and said reference terminal; a fourth resistor connected between a fourth input and a fourth output terminal, a fifth capacitor connected between said fourth input terminal and said reference terminal; a first inductor connected between a fifth input and a fifth output terminal, a sixth capacitor connected between said fifth input terminal and said reference terminal; a second inductor connected between a sixth input and a sixth output terminal, a seventh capacitor connected between said sixth input terminal and said reference terminal; a second zener diode having its anode connected to said first output terminal and its cathode connected to said fourth output terminal; and a third zener diode having its anode connected to said fourth output terminal and its cathode connected to said second output terminal.
Claim 4
Dependent Claim
351 words
A circuit network having six input terminals, a reference terminal, two circuit nodes, and further comprising: a first resistor connected between a first input and a first output terminal, a first zener diode having its cathode connected to said first input terminal and its anode connected to said reference terminal; a fifth and a second resistor, said fifth and second resistors being connected together at a first circuit node, said fifth resistor being further connected to a second input terminal and said second resistor being further connected to a second output terminal so that said fifth and second resistors are connected in seRies between said second input terminal and said second output terminal, a first capacitor connected between said second input terminal and said reference terminal, a second capacitor connected between said first circuit node and said reference terminal; a sixth and a third resistor, said sixth and third resistors being connected together at a second circuit node, said sixth resistor being further connected to a third input terminal and said third resistor being further connected to a third output terminal so that said sixth and third resistors are connected in series between said third input terminal and said third output terminal, a third capacitor connected between said third input terminal and said reference terminal, a fourth capacitor connected between said second circuit node and said reference terminal; a fourth resistor connected between a fourth input and a fourth output terminal, a fifth capacitor connected between said fourth input terminal and said reference terminal; a first inductor connected between a fifth input and a fifth output terminal, a sixth capacitor connected between said fifth input terminal and said reference terminal; a second inductor connected between a sixth input and a sixth output terminal, a seventh capacitor connected between said sixth input terminal and said reference terminal; a second zener diode having its anode connected to said first output terminal and its cathode connected to said fourth output terminal; and a third zener diode having its anode connected to said fourth output terminal and its cathode connected to said second output terminal.
Claim 5
Dependent Claim
165 words
A current suppression circuit comprising: first, second, third and fourth circuit branches each having an input terminal and an output terminal, the respective output terminals of said third and fourth branches being connected together; first, second and third resistors respectively coupled between the input and output terminals of said first, second and third branches; an inductor coupled between the input and output terminals of said fourth branch; a first zener diode coupled between the input terminal of said first branch and a reference terminal; a second zener diode coupled between the respective output terminals of said first and third branches; a third zener diode coupled between the respective output terminals of said second and third branches; a first capacitor coupled between the input terminal of said second branch and said reference terminal; a second capacitor coupled between the input terminal of said third branch and said reference terminal; and a third capacitor coupled between the input terminal of said fourth branch and said reference terminal.
Claim 6
Dependent Claim
165 words
A current suppression circuit comprising: first, second, third and fourth circuit branches each having an input terminal and an output terminal, the respective output terminals of said third and fourth branches being connected together; first, second and third resistors respectively coupled between the input and output terminals of said first, second and third branches; an inductor coupled between the input and output terminals of said fourth branch; a first zener diode coupled between the input terminal of said first branch and a reference terminal; a second zener diode coupled between the respective output terminals of said first and third branches; a third zener diode coupled between the respective output terminals of said second and third branches; a first capacitor coupled between the input terminal of said second branch and said reference terminal; a second capacitor coupled between the input terminal of said third branch and said reference terminal; and a third capacitor coupled between the input terminal of said fourth branch and said reference terminal.
Claim 7
Dependent Claim
93 words
A current suppression circuit according to claim 3 wherein: said first zener diode has an anode connected to said reference terminal and has a cathode connected to the input terminal of said first branch; said second zener diode has an anode connected to the output terminal of said first branch and has a cathode connected to the output terminal of said third branch; and said third zener diode has an anode connected to the output terminal of said third branch and has a cathode connected to the output terminal of said second branch.
Claim 8
Dependent Claim
71 words
A current suppression circuit according to claim 3 and further comprising: a fifth circuit branch having an input terminal and an output terminal, the output terminal of said fifth branch being coupled to the output terminal of said fourth branch; a second inductor coupled between the input and output terminals of said fifth branch; and a fourth capacitor coupled between the input terminal of said fifth branch and said reference terminal.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |