GB1012199A - Overload protection circuit - Google Patents
Overload protection circuitInfo
- Publication number
- GB1012199A GB1012199A GB2032864A GB2032864A GB1012199A GB 1012199 A GB1012199 A GB 1012199A GB 2032864 A GB2032864 A GB 2032864A GB 2032864 A GB2032864 A GB 2032864A GB 1012199 A GB1012199 A GB 1012199A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- load
- resistor
- rectifier
- discharge
- 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
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Amplifiers (AREA)
Abstract
1,012,199. Protective systems. SPERRY RAND CORPORATION. May 15, 1964 [May 28, 1963], No. 20328/64.. Heading H2K. An overload protective arrangement for a circuit, e.g. an amplifier, supplying a load ZL through a circuit-breaker 28, comprises a normally inoperative feed-back path R f , C f connected between output and input stages Q 4 , Q 1 of the circuit and a resistor RS connected in series with the load, the increase in potential across the resistor due to an overload condition rendering the feed-back path operative to bias the circuit to a non-conducting state until the circuit-braker can operate to interrupt the supply +V 3 to the circuit. In the arrangement shown, the increase in potential due to an overload condition renders a controlled rectifier Q 5 conductive. This permits the capacitor C f in the feedback circuit to discharge through the rectifier Q 5 and the resulting voltage developed across a resistor R 3 renders the input transistor Q 1 non-conducting so that the amplifier circuit is turned off. The discharge current I 1 and a current I 4 from + V 3 flow through the rectifier Q 5 , the tripping device (not shown) of the circuit-breaker 28 and the load Z L to cause the tripping of the circuitbreaker in a time shorter than the discharge time of the capacitor C f .
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28389263A | 1963-05-28 | 1963-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1012199A true GB1012199A (en) | 1965-12-08 |
Family
ID=23088020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2032864A Expired GB1012199A (en) | 1963-05-28 | 1964-05-15 | Overload protection circuit |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS419492B1 (en) |
| BE (1) | BE647782A (en) |
| DE (1) | DE1257913B (en) |
| FR (1) | FR1392421A (en) |
| GB (1) | GB1012199A (en) |
| NL (1) | NL6405205A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1187681A (en) * | 1957-04-26 | 1959-09-15 | Soc D Const D App Bardon | Quick response circuit breaker |
| US3109980A (en) * | 1959-05-29 | 1963-11-05 | North American Aviation Inc | Short circuit protection device |
| DE1084820B (en) * | 1959-07-14 | 1960-07-07 | Licentia Gmbh | Short-circuit protection circuit for transistor power supplies |
-
1964
- 1964-05-11 NL NL6405205A patent/NL6405205A/xx unknown
- 1964-05-11 FR FR973999A patent/FR1392421A/en not_active Expired
- 1964-05-11 BE BE647782D patent/BE647782A/xx unknown
- 1964-05-15 GB GB2032864A patent/GB1012199A/en not_active Expired
- 1964-05-22 DE DES91179A patent/DE1257913B/en active Pending
- 1964-05-28 JP JP2986364A patent/JPS419492B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| NL6405205A (en) | 1964-11-30 |
| FR1392421A (en) | 1965-03-12 |
| JPS419492B1 (en) | 1966-05-20 |
| DE1257913B (en) | 1968-01-04 |
| BE647782A (en) | 1964-08-31 |
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