US3731228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillating circuit
Assignee: Panasonic Holdings Corp
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Filing: 1971-09-16
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Granted: 1973-05-01
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Expires: 1991-09-16
Abstract
Abstract An oscillating circuit comprising a Schmitt circuit, a grounded capacitor connected to the input side of the Schmitt circuit and a control circuit connected to the output side of the Schmitt circuit for controlling the charging and discharging of the capacitor.
Inventors
- 👤 N Kubo
- 👤 K Nakamura
- 👤 Y Endo
- 👤 T Katano
- 👤 E Ichinohe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:33
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/501
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
An oscillating circuit comprising a Schmitt circuit including a pair of transistors connected in cascade, a capacitor connected between the input of said Schmitt circuit and ground, a control transistor coupled to the output of said Schmitt circuit for controlling the charging and discharging of said capacitor, the on-off operation of said control transistor being controlled by the output of said Schmitt circuit, connecting circuit means connected between said capacitor and said control transistor, said connecting circuit means being a portion of a charging circuit and also a portion of a first discharge circuit, a second discharge circuit for said capacitor including a resistor connected in parallel with said capacitor, and a diode connected in series with said control transistor, said connecting circuit means, control transistor aNd diode comprising said first discharge path, said first discharge path having a low impedance with respect to the impedance of said second discharge circuit.
Claim 2
Dependent Claim
151 words
An oscillating circuit comprising a Schmitt circuit including a pair of transistors connected in cascade, a capacitor connected between the input of said Schmitt circuit and ground, a control transistor coupled to the output of said Schmitt circuit for controlling the charging and discharging of said capacitor, the on-off operation of said control transistor being controlled by the output of said Schmitt circuit, connecting circuit means connected between said capacitor and said control transistor, said connecting circuit means being a portion of a charging circuit and also a portion of a first discharge circuit, a second discharge circuit for said capacitor including a resistor connected in parallel with said capacitor, and a diode connected in series with said control transistor, said connecting circuit means, control transistor aNd diode comprising said first discharge path, said first discharge path having a low impedance with respect to the impedance of said second discharge circuit.
References Cited (Backward Citations)
US3289103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |