Patent US3593034A successfully refreshed from Google Patents.
US3593034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical ring counter circuit
Assignee: Panasonic Holdings Corp
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Filing: 1968-12-24
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Granted: 1971-07-13
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Expires: 1988-12-24
Abstract
Abstract A tristable circuit of which the main components are three transistors and three diodes, wherein the conduction of the transistors is switched by applying a trigger pulse thereto so that when one of the transistors is rendered conductive, the other two transistors are rendered nonconductive.
Inventors
- 👤 Hachiro Omote
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:45
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/26; H03K3/28; H03K3/281; H03K3/29; H03K23/00; H03K23/002
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
148 words
An electrical ring-counter circuit comprising three transistors whose emitters are grounded and whose collectors are coNnected to a DC source through respective resistors, three voltage dividing network means disposed between said collectors of said transistors and ground respectively, three diodes each of which is connected between a voltage dividing point of one of said voltage dividing network means and the collector of a transistor in a stage preceding that which includes the transistor to whose collector said one voltage dividing network means is connected, and further three diodes each of which is connected between a voltage dividing point of one of said voltage dividing network means and a base of a transistor in a stage succeeding that which includes the transistor to whose collector said one voltage dividing network means is connected, thereby adding a voltage to a cutoff voltage between the base and emitter of said transistors.
Claim 2
Dependent Claim
148 words
An electrical ring-counter circuit comprising three transistors whose emitters are grounded and whose collectors are coNnected to a DC source through respective resistors, three voltage dividing network means disposed between said collectors of said transistors and ground respectively, three diodes each of which is connected between a voltage dividing point of one of said voltage dividing network means and the collector of a transistor in a stage preceding that which includes the transistor to whose collector said one voltage dividing network means is connected, and further three diodes each of which is connected between a voltage dividing point of one of said voltage dividing network means and a base of a transistor in a stage succeeding that which includes the transistor to whose collector said one voltage dividing network means is connected, thereby adding a voltage to a cutoff voltage between the base and emitter of said transistors.
Claim 3
Dependent Claim
247 words
An electrical ring-counter circuit comprising three transistors whose emitters are grounded and whose collectors are connected to a DC source through respective resistors, three first voltage dividing network means disposed between said collectors of said transistors and ground respectively, a voltage dividing point of each one of said first voltage dividing network means being directly connected to a base of a transistor in a stage succeeding that which includes the transistor to whose collector said one of said first voltage dividing network means is connected, three second voltage dividing network means disposed in parallel with said three first voltage dividing network means respectively, three capacitors connected between respective voltage dividing points of said first and second voltage dividing network means, three first diodes each of which is disposed between each one of said voltage dividing points of said first voltage dividing network means and the collector of a transistor in a stage succeeding that which includes the transistor whose base is connected to said one of said voltage dividing points of said first voltage dividing network means, three second diodes which are connected to said voltage dividing points of said second voltage dividing network means respectively at one terminal of each of said three second diodes and are connected to a common junction point at the other terminal of each thereof, and a differentiating circuit disposed between said common junction point of the terminals of said three second diodes and an input terminal for receiving trigger pulses.
Claim 4
Dependent Claim
247 words
An electrical ring-counter circuit comprising three transistors whose emitters are grounded and whose collectors are connected to a DC source through respective resistors, three first voltage dividing network means disposed between said collectors of said transistors and ground respectively, a voltage dividing point of each one of said first voltage dividing network means being directly connected to a base of a transistor in a stage succeeding that which includes the transistor to whose collector said one of said first voltage dividing network means is connected, three second voltage dividing network means disposed in parallel with said three first voltage dividing network means respectively, three capacitors connected between respective voltage dividing points of said first and second voltage dividing network means, three first diodes each of which is disposed between each one of said voltage dividing points of said first voltage dividing network means and the collector of a transistor in a stage succeeding that which includes the transistor whose base is connected to said one of said voltage dividing points of said first voltage dividing network means, three second diodes which are connected to said voltage dividing points of said second voltage dividing network means respectively at one terminal of each of said three second diodes and are connected to a common junction point at the other terminal of each thereof, and a differentiating circuit disposed between said common junction point of the terminals of said three second diodes and an input terminal for receiving trigger pulses.
Claim 5
Dependent Claim
15 words
An electrical ring-counter circuit according to claim 2, wherein said three transistors are silicon transistors.
Claim 6
Dependent Claim
67 words
An electrical ring-counter circuit according to claim 2, wherein said three transistors are germanium transistors and said voltage dividing point of each one of said first voltage dividing network means is connected to the base of said transistor through each one of three third diodes, instead of being directly connected thereto, thereby adding a voltage to a cutoff voltage between the base and emitter of said transistor.
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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |