US3851277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Astable multivibrator using insulated-gate field effect transistors
Assignee: Toshiba Corp
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Filing: 1972-12-27
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Granted: 1974-11-26
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Expires: 1992-12-27
Abstract
Abstract A high frequency astable multivibrator comprises an R-C time constant circuit and an odd number of inverters, for example three, and contains either complementary pair type or same channel conductivity type insulated-gate field effect transistors.
Inventors
- 👤 Y Suzuki
- 👤 E Yamaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:59
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/353; H03K3/354
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
303 words
An astable multivibrator comprising: a first inverter having a first transistor and a second transistor, said first transistor having a gate, a source and a drain, said second transistor having a gate, a source and a drain, a second inverter having a third transistor and a fourth transistor, said third transistor having a gate, a source, and a drain, said fourth transistor having a gate, a source and a drain, a third inverter having a fifth transistor and a sixth transistor, said fifth transistor having a gate, a source and a drain, said sixth transistor having a gate, a source and a drain, means connecting the gate of said first transistor to the gate of said second transistor, means connecting the gate of said third transistor to the gate of said fourth transistor, means connecting the gate of said fifth transistor to the gate of said sixth transistor, means connecting the drain of said first transistor to the drain of said second transistor, means connecting the drain of said third Transistor to the drain of said fourth transistor, means connecting the drain of said fifth transistor to the drain of said sixth transistor, means connecting the sources of said first, third and fifth transistors to a voltage source, means for connecting the sources of said second, fourth and sixth transistors to ground, means connecting the drains of said first and second transistors to the gates of said third and fourth transistors, means connecting the drains of said third and fourth transistors to the gates of said fifth and sixth transistors, a resistor connected between the gates of said first and second transistors and the drains of said fifth and sixth transistors, and a capacitor connected between the gates of said first and second transistors and the gates of said fifth and sixth transistors.
Claim 2
Dependent Claim
303 words
An astable multivibrator comprising: a first inverter having a first transistor and a second transistor, said first transistor having a gate, a source and a drain, said second transistor having a gate, a source and a drain, a second inverter having a third transistor and a fourth transistor, said third transistor having a gate, a source, and a drain, said fourth transistor having a gate, a source and a drain, a third inverter having a fifth transistor and a sixth transistor, said fifth transistor having a gate, a source and a drain, said sixth transistor having a gate, a source and a drain, means connecting the gate of said first transistor to the gate of said second transistor, means connecting the gate of said third transistor to the gate of said fourth transistor, means connecting the gate of said fifth transistor to the gate of said sixth transistor, means connecting the drain of said first transistor to the drain of said second transistor, means connecting the drain of said third Transistor to the drain of said fourth transistor, means connecting the drain of said fifth transistor to the drain of said sixth transistor, means connecting the sources of said first, third and fifth transistors to a voltage source, means for connecting the sources of said second, fourth and sixth transistors to ground, means connecting the drains of said first and second transistors to the gates of said third and fourth transistors, means connecting the drains of said third and fourth transistors to the gates of said fifth and sixth transistors, a resistor connected between the gates of said first and second transistors and the drains of said fifth and sixth transistors, and a capacitor connected between the gates of said first and second transistors and the gates of said fifth and sixth transistors.
Claim 3
Dependent Claim
61 words
An astable multivibrator in accordance with claim 1 wherein said first and second transistors comprise a pair of complimentary channel conductivity type insulated-gate field effect transistors, said third and fourth transistors comprise a pair of complimentary channel conductivity type insulated-gate field effect transistors and said fifth and sixth transistors comprise a pair of complimentary channel conductivity type insulated-gate field effect transistors.
Claim 4
Dependent Claim
39 words
An astable multivibrator in accordance with claim 1, wherein said first, third and fifth transistors comprise N-channel conductivity type insulated-gate field effect transistors and said second, fourth and sixth transistors comprise P-channel conductivity type insulated gate field effect transistors.
Claim 5
Dependent Claim
22 words
An astable multivibrator in accordance with claim 3, wherein said first, second, third, fourth, fifth and sixth transistors comprise metal-oxide semiconductor transistors.
Claim 6
Dependent Claim
276 words
An astable multivibrator comprising: a first inverter having a first transistor and a second transistor, said first transistor having a gate, a source and a drain, said second transistor having a gate, a source and a drain, a second inverter having a third transistor and a fourth transistor, said third transistor having a gate, a source and a drain, said fourth transistor having a gate, a source and a drain, a third inverter having a fifth transistor and sixth transistor, said fifth transistor having a gate, a source and a drain, said sixth transistor having a gate, a source and a drain, means connecting the source of said first transistor to the drain of said second transistor, means connecting the source of said third transistor to the drain of said fourth transistor, means connecting the source of said fifth transistor to the drain of said sixth transistor, means connecting the drains of said first, third, and fifth transistors to a voltage source, means connecting the sources of said second, fourth and sixth transistors to ground, means connecting the gates of said first, third and fifth transistors to said voltage source, means connecting the source of said first transistor and the drain of said second transistor to the gate of said fourth transistor, means connecting the source of said third transistor and the drain of said fourth transistor to the gate of said sixth transistor, a resistor connected between the gate of said second transistor and the source of said fifth transistor and the drain of said sixth transistor, and a capacitor connected between the gate of said second transistor and the gate of said sixth transistor.
Claim 7
Dependent Claim
276 words
An astable multivibrator comprising: a first inverter having a first transistor and a second transistor, said first transistor having a gate, a source and a drain, said second transistor having a gate, a source and a drain, a second inverter having a third transistor and a fourth transistor, said third transistor having a gate, a source and a drain, said fourth transistor having a gate, a source and a drain, a third inverter having a fifth transistor and sixth transistor, said fifth transistor having a gate, a source and a drain, said sixth transistor having a gate, a source and a drain, means connecting the source of said first transistor to the drain of said second transistor, means connecting the source of said third transistor to the drain of said fourth transistor, means connecting the source of said fifth transistor to the drain of said sixth transistor, means connecting the drains of said first, third, and fifth transistors to a voltage source, means connecting the sources of said second, fourth and sixth transistors to ground, means connecting the gates of said first, third and fifth transistors to said voltage source, means connecting the source of said first transistor and the drain of said second transistor to the gate of said fourth transistor, means connecting the source of said third transistor and the drain of said fourth transistor to the gate of said sixth transistor, a resistor connected between the gate of said second transistor and the source of said fifth transistor and the drain of said sixth transistor, and a capacitor connected between the gate of said second transistor and the gate of said sixth transistor.
Claim 8
Dependent Claim
26 words
An astable multivibrator in accordance with claim 5, wherein said first, second, third, fourth, fifth and sixth transistors comprise P-channel conductivity type insulated-gate field effect transistors.
Claim 9
Dependent Claim
26 words
An astable multivibrator in accordance with claim 5, wherein said first, second third, fourth, fifth and sixth transistors comprise N-channel conductivity type insulated-gate field effect transistors.
Claim 10
Dependent Claim
21 words
An astable multivibrator in accordance with claim 6, wherein said first, second, thIrd, fourth, fifth and sixth transistors comprise metal-oxide semiconductors.
Claim 11
Dependent Claim
21 words
An astable multivibrator in accordance with claim 7, wherein said first, second, third, fourth, fifth and sixth transistors comprise metal-oxide semiconductors.
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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |