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US3569864A
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Astable transistor multivibrator frequency divider
Assignee: Ebauches SA
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Filing: 1969-01-06
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Granted: 1971-03-09
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Expires: 1989-01-06
Abstract
Abstract A frequency divider is formed by an astable transistorized multivibrator of symmetrical construction comprising two parts. Rectangular input signals are applied symmetrically and in opposite phase to each part, and fed to the emitters of the transistors through a respective input capacitor. The multivibrator is a relaxation oscillator consisting of two NPN transistors coupled through two capacitors, so that the input of one transistor is actuated through the respective capacitor, by the output of the other transistor. The input signals may be supplied by an identical multivibrator.
Inventors
- 👤 Igor Scherrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:36
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/00006
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
20 words
The frequency divider according to claim 1, the multivibrator including two input capacitators arranged to differentiate the rectangular input signals.
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) | 1974-03-08 | 1974-09-07 | 1975-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-08 | 1978-09-07 | 1979-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-08 | 1982-09-07 | 1983-03-09 | $7700.00 | Window Closed / Lapsed |