GB1025039A - Switch condition indicating arrangements - Google Patents
Switch condition indicating arrangementsInfo
- Publication number
- GB1025039A GB1025039A GB3929064A GB3929064A GB1025039A GB 1025039 A GB1025039 A GB 1025039A GB 3929064 A GB3929064 A GB 3929064A GB 3929064 A GB3929064 A GB 3929064A GB 1025039 A GB1025039 A GB 1025039A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tube
- switch
- electrode
- glow
- condition
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/167—Circuits for remote indication
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
- G08B25/14—Central alarm receiver or annunciator arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
- H01H9/165—Indicators for switching condition, e.g. "on" or "off" comprising numbered dials
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
1,025,039. Protective systems. TRANSELEKTRO MAGYAR VILLAMOSSAGI KULKERESKEDELMI VALLALAT. Sept. 25, 1964, No. 39290/64. Heading H2K. [Also in Division G4] A condition indicating arrangement comprises a pair of parallel paths each including a resistor and a switch R 1 , K 1 and R 2 , K 2 respectively and a gas-discharge tube G connected between the junction points C 1 , C 2 . In one condition switch K 1 is open and K 2 closed, and current flow between terminals T 1 , T 2 causes one of the tube electrodes E 1 or E 2 to glow. In a second condition, K 1 is closed and K 2 open and current flow through tube G is in the other direction causing the other electrode to glow. Two further conditions may be indicated by means of a further switch N which connects an A.C. supply Sz to one or other electrode of the tube. Four indications are thus obtained, i.e. a steady or pulsating glow on either electrode E 1 or on E 2 , depending on the positions of switches K and N. In a modification, Fig. 2 (not shown), the diodes D 1 , D 2 are omitted and contact 3 of switch N is connected via a capacitor to terminal T 1 , thus forming a self-oscillating circuit when ever the switches connect the capacitor across the tube G.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0026581 | 1964-07-14 | ||
| BE651313A BE651313A (en) | 1964-07-14 | 1964-08-03 | |
| NL6408897A NL6408897A (en) | 1964-07-14 | 1964-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1025039A true GB1025039A (en) | 1966-04-06 |
Family
ID=27159011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3929064A Expired GB1025039A (en) | 1964-07-14 | 1964-09-25 | Switch condition indicating arrangements |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE651313A (en) |
| CH (1) | CH438460A (en) |
| DE (1) | DE1490800B2 (en) |
| GB (1) | GB1025039A (en) |
| NL (2) | NL6408897A (en) |
-
0
- NL NL122106D patent/NL122106C/xx active
-
1964
- 1964-07-14 DE DE19641490800 patent/DE1490800B2/en active Pending
- 1964-07-15 CH CH976064A patent/CH438460A/en unknown
- 1964-08-03 BE BE651313A patent/BE651313A/xx unknown
- 1964-08-04 NL NL6408897A patent/NL6408897A/xx unknown
- 1964-09-25 GB GB3929064A patent/GB1025039A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL6408897A (en) | 1966-02-07 |
| CH438460A (en) | 1967-06-30 |
| BE651313A (en) | 1964-12-01 |
| DE1490800B2 (en) | 1971-11-04 |
| NL122106C (en) | |
| DE1490800A1 (en) | 1969-06-04 |
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