US3911348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric charge holding device
Assignee: Panasonic Holdings Corp
•
Filing: 1974-02-20
•
Granted: 1975-10-07
•
Expires: 1994-02-20
Abstract
Abstract This invention relates to an electric charge holding device consisting of a series circuit of a capacitor, a discharge tube and a resistor, where an arbitrary variable voltage and an a.c. voltage which are respectively lower and higher than the discharge voltage of the discharge tube are superimposed and an output voltage is taken out of the capacitor, aiming to provide an electric charge holding device for effecting an accurate hold of electric charge.
Inventors
- 👤 Takehide Takemura
- 👤 Shunji Minami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:37
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/02; G11C27/024; H; H03; H03G; H03G3/00; H03G3/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
95 words
An electric charge holding device comprising a capacitor, a resistor and a discharge tube connected in series; means for superimposing upon said series circuit an arbitrary voltage having a d.c. component for charging said capacitor; means for superimposing upon said series circuit an alternating voltage for driving said discharge tube into its conductive state, said arbitrary voltage having a magnitude not greater than the discharge voltage of said discharge tube and said alternating voltage having an amplitude not less than said discharge voltage; and output means coupled across said capacitor for providing an output vOltage.
Claim 2
Dependent Claim
95 words
An electric charge holding device comprising a capacitor, a resistor and a discharge tube connected in series; means for superimposing upon said series circuit an arbitrary voltage having a d.c. component for charging said capacitor; means for superimposing upon said series circuit an alternating voltage for driving said discharge tube into its conductive state, said arbitrary voltage having a magnitude not greater than the discharge voltage of said discharge tube and said alternating voltage having an amplitude not less than said discharge voltage; and output means coupled across said capacitor for providing an output vOltage.
Claim 3
Dependent Claim
30 words
An electric charge holding device according to claim 1, wherein said arbitrary voltage is a direct voltage having a magnitude not greater than the discharge voltage of said discharge tube.
Claim 4
Dependent Claim
60 words
An electric charge holding device according to claim 1, wherein said output means is an insulated gate type field effect transistor having its gate electrode coupled to one end of said capacitor and its source electrode coupled to the other end of said capacitor, said output voltage being obtained between said source electrode and the other end of said capacitor.
Claim 5
Dependent Claim
26 words
An electric charge holding device according to claim 1, wherein said output voltage is obtained between said drain electrode and the other end of said capacitor.
Claim 6
Dependent Claim
58 words
An electric charge holding device according to claim 1, wherein said arbitrary voltage has a repetitive varying magnitude and wherein the frequency of said alternating voltage is at least an order of magnitude higher than the repetition period of said arbitrary voltage, whereby the reactance of said capacitor is made negligible compared to the resistance of said resistor.
Claim 7
Dependent Claim
22 words
An electric charge holding device according to claim 1, wherein the magnitude of the d.c. component of said arbitrary voltage is variable.
Claim 8
Dependent Claim
38 words
An electric charge holding device according to claim 6, wherein said arbitrary voltage is a square wave voltage and wherein the ratio of the pulse width of said square wave to the period of said wave is variable.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-06 | 1979-04-07 | 1979-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-06 | 1983-04-07 | 1983-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-06 | 1987-04-07 | 1987-10-07 | $7700.00 | Window Closed / Lapsed |