FR2450461B1 - - Google Patents
Info
- Publication number
- FR2450461B1 FR2450461B1 FR7905139A FR7905139A FR2450461B1 FR 2450461 B1 FR2450461 B1 FR 2450461B1 FR 7905139 A FR7905139 A FR 7905139A FR 7905139 A FR7905139 A FR 7905139A FR 2450461 B1 FR2450461 B1 FR 2450461B1
- 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
- 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)
- Circuits Of Receivers In General (AREA)
- Burglar Alarm Systems (AREA)
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 FR2450461A1 (fr) | 1980-09-26 |
| FR2450461B1 true FR2450461B1 (US06252093-20010626-C00008.png) | 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 (US06252093-20010626-C00008.png) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5323115A (en) * | 1992-05-05 | 1994-06-21 | Xerox Corporation | Electrostatic voltmeter producing a low voltage output |
| US5270660A (en) * | 1992-05-05 | 1993-12-14 | Xerox Corporation | Electrostatic voltmeter employing high voltage integrated circuit devices |
| US5488301A (en) * | 1994-12-19 | 1996-01-30 | Xerox Corporation | Electrostatic voltmeter employing a differential cascode |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1806375B2 (de) * | 1968-07-12 | 1972-08-31 | VEB Kombinat Robotron, χ 8142 Radeberg | In form eines pruefstiftes ausgebildetes anzeigegeraet fuer signalpegel digitaler scgaltkreise |
| 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
Also Published As
| Publication number | Publication date |
|---|---|
| FR2450461A1 (fr) | 1980-09-26 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |