FR2450461A1 - Dispositif qui permet de controler les charges electriques statiques des disques phonographiques - Google Patents
Dispositif qui permet de controler les charges electriques statiques des disques phonographiquesInfo
- Publication number
- FR2450461A1 FR2450461A1 FR7905139A FR7905139A FR2450461A1 FR 2450461 A1 FR2450461 A1 FR 2450461A1 FR 7905139 A FR7905139 A FR 7905139A FR 7905139 A FR7905139 A FR 7905139A FR 2450461 A1 FR2450461 A1 FR 2450461A1
- Authority
- FR
- France
- Prior art keywords
- led
- fet
- antenna connected
- darlington amplifier
- static electricity
- Prior art date
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
- G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
- G01R19/16571—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 comparing AC or DC current with one threshold, e.g. load current, over-current, surge current or fault current
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/24—Arrangements for measuring quantities of charge
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Burglar Alarm Systems (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
L'INVENTION CONCERNE LA DETECTION DES CHARGES STATIQUES DES DISQUES PHONOGRAPHIQUES. DISPOSITIF COMPRENANT: 1.AMPLIFICATEUR A TRES HAUTE IMPEDANCE; 2.AMPLIFICATEUR DES SIGNAUX NEGATIFS ALIMENTANT LED1; 3.AMPLIFICATEUR DES SIGNAUX POSITIFS ALIMENTANT LED2. APPLICATION: UTILISATION CONJOINTE AUX ACCESSOIRES ANTISTATIQUES DES DISQUES PHONOGRAPHIQUES.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905139A FR2450461A1 (fr) | 1979-02-28 | 1979-02-28 | Dispositif qui permet de controler les charges electriques statiques des disques phonographiques |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7905139A FR2450461A1 (fr) | 1979-02-28 | 1979-02-28 | Dispositif qui permet de controler les charges electriques statiques des disques phonographiques |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2450461A1 true FR2450461A1 (fr) | 1980-09-26 |
FR2450461B1 FR2450461B1 (fr) | 1982-10-29 |
Family
ID=9222550
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7905139A Granted FR2450461A1 (fr) | 1979-02-28 | 1979-02-28 | Dispositif qui permet de controler les charges electriques statiques des disques phonographiques |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2450461A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0570148A2 (fr) * | 1992-05-05 | 1993-11-18 | Xerox Corporation | Voltmètre électrostatique avec des circuits intégrés haute tension |
US5323115A (en) * | 1992-05-05 | 1994-06-21 | Xerox Corporation | Electrostatic voltmeter producing a low voltage output |
US5488301A (en) * | 1994-12-19 | 1996-01-30 | Xerox Corporation | Electrostatic voltmeter employing a differential cascode |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1806375A1 (de) * | 1968-07-12 | 1970-02-19 | Elektronische Rechenmasch Ind | Anzeigegeraet fuer Signalpegel digitaler Schaltkreise |
US3579050A (en) * | 1969-06-11 | 1971-05-18 | Northern Electric Co | High-low voltage detector |
FR2303287A1 (fr) * | 1975-03-06 | 1976-10-01 | Berckheim Graf Von | Detecteur d'ions, notamment pour boitier de telecommande par ultrasons de television |
FR2394093A1 (fr) * | 1977-06-08 | 1979-01-05 | Mizoule Henri | Dispositif de detection de charges electrostatiques |
-
1979
- 1979-02-28 FR FR7905139A patent/FR2450461A1/fr active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1806375A1 (de) * | 1968-07-12 | 1970-02-19 | Elektronische Rechenmasch Ind | Anzeigegeraet fuer Signalpegel digitaler Schaltkreise |
US3579050A (en) * | 1969-06-11 | 1971-05-18 | Northern Electric Co | High-low voltage detector |
FR2303287A1 (fr) * | 1975-03-06 | 1976-10-01 | Berckheim Graf Von | Detecteur d'ions, notamment pour boitier de telecommande par ultrasons de television |
FR2394093A1 (fr) * | 1977-06-08 | 1979-01-05 | Mizoule Henri | Dispositif de detection de charges electrostatiques |
Non-Patent Citations (1)
Title |
---|
EXBK/73 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0570148A2 (fr) * | 1992-05-05 | 1993-11-18 | Xerox Corporation | Voltmètre électrostatique avec des circuits intégrés haute tension |
EP0570148A3 (fr) * | 1992-05-05 | 1993-12-22 | Xerox Corporation | Voltmètre électrostatique avec des circuits intégrés haute tension |
US5323115A (en) * | 1992-05-05 | 1994-06-21 | Xerox Corporation | Electrostatic voltmeter producing a low voltage output |
US5488301A (en) * | 1994-12-19 | 1996-01-30 | Xerox Corporation | Electrostatic voltmeter employing a differential cascode |
Also Published As
Publication number | Publication date |
---|---|
FR2450461B1 (fr) | 1982-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |