FR2305055B1 - - Google Patents
Info
- Publication number
- FR2305055B1 FR2305055B1 FR7602499A FR7602499A FR2305055B1 FR 2305055 B1 FR2305055 B1 FR 2305055B1 FR 7602499 A FR7602499 A FR 7602499A FR 7602499 A FR7602499 A FR 7602499A FR 2305055 B1 FR2305055 B1 FR 2305055B1
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
- G11B5/027—Analogue recording
- G11B5/03—Biasing
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/12—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device
- H03B5/1206—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being semiconductor device using multiple transistors for amplification
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
- H03B7/02—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance
- H03B7/06—Generation of oscillations using active element having a negative resistance between two of its electrodes with frequency-determining element comprising lumped inductance and capacitance active element being semiconductor device
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/558,576 US4006433A (en) | 1975-03-17 | 1975-03-17 | Bias/erase oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2305055A1 FR2305055A1 (fr) | 1976-10-15 |
| FR2305055B1 true FR2305055B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1980-05-30 |
Family
ID=24230091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7602499A Granted FR2305055A1 (fr) | 1975-03-17 | 1976-01-27 | Oscillateur de generation de signaux de polarisation et d'effacement, notamment pour enregistreur magnetique portatif |
Country Status (7)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE425705B (sv) * | 1980-12-23 | 1982-10-25 | Ericsson Telefon Ab L M | Anordning for att i en databasanleggning automatiskt forstora informationsinnehallet i dataminnen och programminnen |
| DE3401531A1 (de) * | 1984-01-14 | 1985-07-25 | Heinrich 6090 Rüsselsheim Jores | Sinusoszillator zur erzeugung von ungedaempften elektrischen schwingungen |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE523970A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 1953-03-28 | |||
| US3464029A (en) * | 1966-03-02 | 1969-08-26 | Alfred Electronics | Transistor oscillator circuit employing variable depletion capacitance and carrier storage capacitance |
| US3391351A (en) * | 1966-11-21 | 1968-07-02 | Bell Telephone Labor Inc | Circuits using a transistor operated into second breakdown region |
| US3649929A (en) * | 1970-11-30 | 1972-03-14 | Motorola Inc | Sinusoidal and square wave oscillator with automatic gain control |
| US3806828A (en) * | 1973-07-26 | 1974-04-23 | Cetec Inc | Combined high-frequency bias generator and amplifier for recording systems |
-
1975
- 1975-03-17 US US05/558,576 patent/US4006433A/en not_active Expired - Lifetime
-
1976
- 1976-01-27 FR FR7602499A patent/FR2305055A1/fr active Granted
- 1976-02-10 JP JP51012930A patent/JPS51111319A/ja active Granted
- 1976-02-20 IT IT20381/76A patent/IT1054875B/it active
- 1976-03-02 CA CA246,913A patent/CA1056467A/en not_active Expired
- 1976-03-02 DE DE19762608543 patent/DE2608543A1/de not_active Withdrawn
- 1976-03-10 GB GB9464/76A patent/GB1486386A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| IT1054875B (it) | 1981-11-30 |
| JPS51111319A (en) | 1976-10-01 |
| JPS579128B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1982-02-19 |
| GB1486386A (en) | 1977-09-21 |
| US4006433A (en) | 1977-02-01 |
| DE2608543A1 (de) | 1976-09-30 |
| CA1056467A (en) | 1979-06-12 |
| FR2305055A1 (fr) | 1976-10-15 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |